101113021 has 2 divisors, whose sum is σ = 101113022. Its totient is φ = 101113020.

The previous prime is 101113009. The next prime is 101113043. The reversal of 101113021 is 120311101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79388100 + 21724921 = 8910^2 + 4661^2 .

It is an emirp because it is prime and its reverse (120311101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101113021 - 2²³ = 92724413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101112989 and 101113007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101113321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50556510 + 50556511.

It is an arithmetic number, because the mean of its divisors is an integer number (50556511).

Almost surely, 2^101113021 is an apocalyptic number.

It is an amenable number.

101113021 is a deficient number, since it is larger than the sum of its proper divisors (1).

101113021 is an equidigital number, since it uses as much as digits as its factorization.

101113021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 101113021 is about 10055.4970538507. The cubic root of 101113021 is about 465.8745955544.

Adding to 101113021 its reverse (120311101), we get a palindrome (221424122).

The spelling of 101113021 in words is "one hundred one million, one hundred thirteen thousand, twenty-one".