120101515100 has 72 divisors (see below), whose sum is σ = 302900196480. Its totient is φ = 40479721920.

The previous prime is 120101515091. The next prime is 120101515123. The reversal of 120101515100 is 1515101021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1412714 + ... + 1495313.

Almost surely, 2^120101515100 is an apocalyptic number.

120101515100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120101515100 is an abundant number, since it is smaller than the sum of its proper divisors (182798681380).

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

120101515100 is a wasteful number, since it uses less digits than its factorization.

120101515100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2908107 (or 2908100 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 17.

Adding to 120101515100 its reverse (1515101021), we get a palindrome (121616616121).

The spelling of 120101515100 in words is "one hundred twenty billion, one hundred one million, five hundred fifteen thousand, one hundred".