120221002100 has 36 divisors (see below), whose sum is σ = 265156302348. Its totient is φ = 47300064000.

The previous prime is 120221002091. The next prime is 120221002129. The reversal of 120221002100 is 1200122021.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 51537172324 + 68683829776 = 227018^2 + 262076^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9848081 + ... + 9860280.

It is an arithmetic number, because the mean of its divisors is an integer number (7365452843).

Almost surely, 2^120221002100 is an apocalyptic number.

120221002100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120221002100 is an abundant number, since it is smaller than the sum of its proper divisors (144935300248).

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

120221002100 is a wasteful number, since it uses less digits than its factorization.

120221002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19708436 (or 19708429 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 120221002100 its reverse (1200122021), we get a palindrome (121421124121).

The spelling of 120221002100 in words is "one hundred twenty billion, two hundred twenty-one million, two thousand, one hundred".