121100131023 has 32 divisors (see below), whose sum is σ = 178683744960. Its totient is φ = 72607825920.

The previous prime is 121100130973. The next prime is 121100131151. The reversal of 121100131023 is 320131001121.

It is a happy number.

It is not a de Polignac number, because 121100131023 - 2¹⁶ = 121100065487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121100130993 and 121100131011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100131423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 278598 + ... + 565523.

It is an arithmetic number, because the mean of its divisors is an integer number (5583867030).

Almost surely, 2^121100131023 is an apocalyptic number.

121100131023 is a deficient number, since it is larger than the sum of its proper divisors (57583613937).

121100131023 is a wasteful number, since it uses less digits than its factorization.

121100131023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844267.

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

Adding to 121100131023 its reverse (320131001121), we get a palindrome (441231132144).

The spelling of 121100131023 in words is "one hundred twenty-one billion, one hundred million, one hundred thirty-one thousand, twenty-three".