131121225250320 has 80 divisors (see below), whose sum is σ = 408603943959552. Its totient is φ = 34782593771520.

The previous prime is 131121225250307. The next prime is 131121225250369. The reversal of 131121225250320 is 23052522121131.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×131121225250320² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1430159497 + ... + 1430251176.

Almost surely, 2^{131121225250320} is an apocalyptic number.

131121225250320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131121225250320 is an abundant number, since it is smaller than the sum of its proper divisors (277482718709232).

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

131121225250320 is a wasteful number, since it uses less digits than its factorization.

131121225250320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2860410880 (or 2860410874 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 131121225250320 its reverse (23052522121131), we get a palindrome (154173747371451).

The spelling of 131121225250320 in words is "one hundred thirty-one trillion, one hundred twenty-one billion, two hundred twenty-five million, two hundred fifty thousand, three hundred twenty".