120220021000 has 32 divisors (see below), whose sum is σ = 281314851480. Its totient is φ = 48088008000.

The previous prime is 120220020979. The next prime is 120220021069. The reversal of 120220021000 is 120022021.

It can be written as a sum of positive squares in 4 ways, for example, as 11732789124 + 108487231876 = 108318^2 + 329374^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60109011 + ... + 60111010.

Almost surely, 2^120220021000 is an apocalyptic number.

120220021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120220021000 is an abundant number, since it is smaller than the sum of its proper divisors (161094830480).

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

120220021000 is a wasteful number, since it uses less digits than its factorization.

120220021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120220042 (or 120220028 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 120220021000 its reverse (120022021), we get a palindrome (120340043021).

The spelling of 120220021000 in words is "one hundred twenty billion, two hundred twenty million, twenty-one thousand".