121025031320 has 32 divisors (see below), whose sum is σ = 272318004000. Its totient is φ = 48407935488.

The previous prime is 121025031311. The next prime is 121025031371. The reversal of 121025031320 is 23130520121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 121025031292 and 121025031301.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1168277 + ... + 1267643.

It is an arithmetic number, because the mean of its divisors is an integer number (8509937625).

Almost surely, 2^121025031320 is an apocalyptic number.

121025031320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121025031320 is an abundant number, since it is smaller than the sum of its proper divisors (151292972680).

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

121025031320 is a wasteful number, since it uses less digits than its factorization.

121025031320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129827 (or 129823 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 121025031320 its reverse (23130520121), we get a palindrome (144155551441).

The spelling of 121025031320 in words is "one hundred twenty-one billion, twenty-five million, thirty-one thousand, three hundred twenty".