311111120021002 has 64 divisors (see below), whose sum is σ = 539407999088640. Its totient is φ = 131824203336000.

The previous prime is 311111120020999. The next prime is 311111120021041. The reversal of 311111120021002 is 200120021111113.

It is a happy number.

It is a super-2 number, since 2×311111120021002² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 716115427 + ... + 716549737.

It is an arithmetic number, because the mean of its divisors is an integer number (8428249985760).

Almost surely, 2^{311111120021002} is an apocalyptic number.

311111120021002 is a deficient number, since it is larger than the sum of its proper divisors (228296879067638).

311111120021002 is a wasteful number, since it uses less digits than its factorization.

311111120021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436147.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 311111120021002 its reverse (200120021111113), we get a palindrome (511231141132115).

The spelling of 311111120021002 in words is "three hundred eleven trillion, one hundred eleven billion, one hundred twenty million, twenty-one thousand, two".