120020221000 has 64 divisors (see below), whose sum is σ = 297367789680. Its totient is φ = 45184076800.

The previous prime is 120020220941. The next prime is 120020221031. The reversal of 120020221000 is 122020021.

It can be written as a sum of positive squares in 8 ways, for example, as 933156 + 120019287844 = 966^2 + 346438^2 .

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

It is an unprimeable number.

It is a 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, 3513007 + ... + 3547006.

Almost surely, 2^120020221000 is an apocalyptic number.

120020221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120020221000 is an abundant number, since it is smaller than the sum of its proper divisors (177347568680).

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

120020221000 is a wasteful number, since it uses less digits than its factorization.

120020221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7060051 (or 7060037 counting only the distinct ones).

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

Adding to 120020221000 its reverse (122020021), we get a palindrome (120142241021).

The spelling of 120020221000 in words is "one hundred twenty billion, twenty million, two hundred twenty-one thousand".