Search a number
-
+
101202120101 = 991102121211
BaseRepresentation
bin101111001000000011…
…1011100110110100101
3100200012221122101000102
41132100013130312211
53124230220320401
6114254104353445
710211611553555
oct1362007346645
9320187571012
10101202120101
1139a12a5a795
1217744475885
13970a896c04
144c80983165
152974a4356b
hex17901dcda5

101202120101 has 4 divisors (see below), whose sum is σ = 101304242304. Its totient is φ = 101099997900.

The previous prime is 101202120077. The next prime is 101202120121. The reversal of 101202120101 is 101021202101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101202120101 - 26 = 101202120037 is a prime.

It is a super-2 number, since 2×1012021201012 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101202120121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51059615 + ... + 51061596.

It is an arithmetic number, because the mean of its divisors is an integer number (25326060576).

Almost surely, 2101202120101 is an apocalyptic number.

It is an amenable number.

101202120101 is a deficient number, since it is larger than the sum of its proper divisors (102122203).

101202120101 is an equidigital number, since it uses as much as digits as its factorization.

101202120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102122202.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101202120101 its reverse (101021202101), we get a palindrome (202223322202).

The spelling of 101202120101 in words is "one hundred one billion, two hundred two million, one hundred twenty thousand, one hundred one".

Divisors: 1 991 102121211 101202120101