121131023013 has 48 divisors (see below), whose sum is σ = 234920789376. Its totient is φ = 58084801920.

The previous prime is 121131023011. The next prime is 121131023071. The reversal of 121131023013 is 310320131121.

121131023013 is a `hidden beast` number, since 121 + 1 + 310 + 230 + 1 + 3 = 666.

It is not a de Polignac number, because 121131023013 - 2¹ = 121131023011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121131023011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6713770 + ... + 6731787.

It is an arithmetic number, because the mean of its divisors is an integer number (4894183112).

Almost surely, 2^121131023013 is an apocalyptic number.

121131023013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121131023013 is a deficient number, since it is larger than the sum of its proper divisors (113789766363).

121131023013 is a wasteful number, since it uses less digits than its factorization.

121131023013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13445594 (or 13445591 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 121131023013 its reverse (310320131121), we get a palindrome (431451154134).

The spelling of 121131023013 in words is "one hundred twenty-one billion, one hundred thirty-one million, twenty-three thousand, thirteen".