131121201232120 has 32 divisors (see below), whose sum is σ = 321842948479920. Its totient is φ = 47680436811520.

The previous prime is 131121201232103. The next prime is 131121201232139. The reversal of 131121201232120 is 21232102121131.

It is a happy number.

It is a super-2 number, since 2×131121201232120² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 131121201232091 and 131121201232100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149001364597 + ... + 149001365476.

Almost surely, 2^{131121201232120} is an apocalyptic number.

131121201232120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131121201232120 is an abundant number, since it is smaller than the sum of its proper divisors (190721747247800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131121201232120 is a wasteful number, since it uses less digits than its factorization.

131121201232120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298002730095 (or 298002730091 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 131121201232120 its reverse (21232102121131), we get a palindrome (152353303353251).

The spelling of 131121201232120 in words is "one hundred thirty-one trillion, one hundred twenty-one billion, two hundred one million, two hundred thirty-two thousand, one hundred twenty".