121031123023111 has 16 divisors (see below), whose sum is σ = 141251013774400. Its totient is φ = 103662430058880.

The previous prime is 121031123023099. The next prime is 121031123023133. The reversal of 121031123023111 is 111320321130121.

It is not a de Polignac number, because 121031123023111 - 2³³ = 121022533088519 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 (121031123023211) 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, 133104966 + ... + 134011171.

It is an arithmetic number, because the mean of its divisors is an integer number (8828188360900).

Almost surely, 2^{121031123023111} is an apocalyptic number.

121031123023111 is a deficient number, since it is larger than the sum of its proper divisors (20219890751289).

121031123023111 is an equidigital number, since it uses as much as digits as its factorization.

121031123023111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267117479 (or 267117465 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 121031123023111 its reverse (111320321130121), we get a palindrome (232351444153232).

The spelling of 121031123023111 in words is "one hundred twenty-one trillion, thirty-one billion, one hundred twenty-three million, twenty-three thousand, one hundred eleven".