121010031311 has 16 divisors (see below), whose sum is σ = 130519583040. Its totient is φ = 111529370880.

The previous prime is 121010031251. The next prime is 121010031313. The reversal of 121010031311 is 113130010121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121010031311 - 2¹⁰ = 121010030287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010031313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34172201 + ... + 34175741.

It is an arithmetic number, because the mean of its divisors is an integer number (8157473940).

Almost surely, 2^121010031311 is an apocalyptic number.

121010031311 is a deficient number, since it is larger than the sum of its proper divisors (9509551729).

121010031311 is a wasteful number, since it uses less digits than its factorization.

121010031311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6866.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 121010031311 its reverse (113130010121), we get a palindrome (234140041432).

The spelling of 121010031311 in words is "one hundred twenty-one billion, ten million, thirty-one thousand, three hundred eleven".