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101120101021 is a prime number
BaseRepresentation
bin101111000101100111…
…0100100101010011101
3100200000020022100222201
41132023032210222131
53124043221213041
6114242014411501
710206564451102
oct1361316445235
9320006270881
10101120101021
113998072a625
1217720b00b91
1396c68aa804
144c73b12aa9
15296c741631
hex178b3a4a9d

101120101021 has 2 divisors, whose sum is σ = 101120101022. Its totient is φ = 101120101020.

The previous prime is 101120101009. The next prime is 101120101031. The reversal of 101120101021 is 120101021101.

It is an a-pointer prime, because the next prime (101120101031) can be obtained adding 101120101021 to its sum of digits (10).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71625816900 + 29494284121 = 267630^2 + 171739^2 .

It is an emirp because it is prime and its reverse (120101021101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101120101021 - 29 = 101120100509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101120100989 and 101120101007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101120101031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50560050510 + 50560050511.

It is an arithmetic number, because the mean of its divisors is an integer number (50560050511).

Almost surely, 2101120101021 is an apocalyptic number.

It is an amenable number.

101120101021 is a deficient number, since it is larger than the sum of its proper divisors (1).

101120101021 is an equidigital number, since it uses as much as digits as its factorization.

101120101021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 101120101021 its reverse (120101021101), we get a palindrome (221221122122).

It can be divided in two parts, 101 and 120101021, that multiplied together give a palindrome (12130203121).

The spelling of 101120101021 in words is "one hundred one billion, one hundred twenty million, one hundred one thousand, twenty-one".