100311023121 has 16 divisors (see below), whose sum is σ = 137463388800. Its totient is φ = 65066511024.

The previous prime is 100311023119. The next prime is 100311023179. The reversal of 100311023121 is 121320113001.

It is a happy number.

It is not a de Polignac number, because 100311023121 - 2¹ = 100311023119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100311023121.

It is not an unprimeable number, because it can be changed into a prime (100311023101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178101 + ... + 482018.

It is an arithmetic number, because the mean of its divisors is an integer number (8591461800).

Almost surely, 2^100311023121 is an apocalyptic number.

It is an amenable number.

100311023121 is a deficient number, since it is larger than the sum of its proper divisors (37152365679).

100311023121 is an frugal number, since it uses more digits than its factorization.

100311023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660233 (or 660159 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 100311023121 its reverse (121320113001), we get a palindrome (221631136122).

The spelling of 100311023121 in words is "one hundred billion, three hundred eleven million, twenty-three thousand, one hundred twenty-one".