120100221100 has 36 divisors (see below), whose sum is σ = 263197873008. Its totient is φ = 47564440000.

The previous prime is 120100221083. The next prime is 120100221121. The reversal of 120100221100 is 1122001021.

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 11 ways as a sum of consecutive naturals, for example, 5935456 + ... + 5955655.

It is an arithmetic number, because the mean of its divisors is an integer number (7311052028).

Almost surely, 2^120100221100 is an apocalyptic number.

120100221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120100221100 is an abundant number, since it is smaller than the sum of its proper divisors (143097651908).

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

120100221100 is a wasteful number, since it uses less digits than its factorization.

120100221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11891226 (or 11891219 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 120100221100 its reverse (1122001021), we get a palindrome (121222222121).

The spelling of 120100221100 in words is "one hundred twenty billion, one hundred million, two hundred twenty-one thousand, one hundred".