121031100311 has 16 divisors (see below), whose sum is σ = 134189502720. Its totient is φ = 108236494080.

The previous prime is 121031100283. The next prime is 121031100317. The reversal of 121031100311 is 113001130121.

It is a happy number.

It is not a de Polignac number, because 121031100311 - 2⁶ = 121031100247 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 (121031100317) 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, 422855 + ... + 648743.

It is an arithmetic number, because the mean of its divisors is an integer number (8386843920).

Almost surely, 2^121031100311 is an apocalyptic number.

121031100311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121031100311 is a deficient number, since it is larger than the sum of its proper divisors (13158402409).

121031100311 is a wasteful number, since it uses less digits than its factorization.

121031100311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226694.

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

Adding to 121031100311 its reverse (113001130121), we get a palindrome (234032230432).

The spelling of 121031100311 in words is "one hundred twenty-one billion, thirty-one million, one hundred thousand, three hundred eleven".