120000021960 has 192 divisors, whose sum is σ = 450989380800. Its totient is φ = 25318669824.

The previous prime is 120000021959. The next prime is 120000022033. The reversal of 120000021960 is 69120000021.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 708490 + ... + 861369.

It is an arithmetic number, because the mean of its divisors is an integer number (2348903025).

Almost surely, 2^120000021960 is an apocalyptic number.

120000021960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120000021960 is an abundant number, since it is smaller than the sum of its proper divisors (330989358840).

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

120000021960 is a wasteful number, since it uses less digits than its factorization.

120000021960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569900 (or 1569889 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 120000021960 its reverse (69120000021), we get a palindrome (189120021981).

The spelling of 120000021960 in words is "one hundred twenty billion, twenty-one thousand, nine hundred sixty".