120021101000 has 32 divisors (see below), whose sum is σ = 280849378680. Its totient is φ = 48008440000.

The previous prime is 120021100993. The next prime is 120021101059. The reversal of 120021101000 is 101120021.

It can be written as a sum of positive squares in 4 ways, for example, as 25197752644 + 94823348356 = 158738^2 + 307934^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

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, 60009551 + ... + 60011550.

Almost surely, 2^120021101000 is an apocalyptic number.

120021101000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120021101000 is an abundant number, since it is smaller than the sum of its proper divisors (160828277680).

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

120021101000 is a wasteful number, since it uses less digits than its factorization.

120021101000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120021122 (or 120021108 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 120021101000 its reverse (101120021), we get a palindrome (120122221021).

The spelling of 120021101000 in words is "one hundred twenty billion, twenty-one million, one hundred one thousand".