120721200902 has 16 divisors (see below), whose sum is σ = 181499464800. Its totient is φ = 60221508672.

The previous prime is 120721200869. The next prime is 120721200917. The reversal of 120721200902 is 209002127021.

It is a super-2 number, since 2×120721200902² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1901138 + ... + 1963610.

It is an arithmetic number, because the mean of its divisors is an integer number (11343716550).

Almost surely, 2^120721200902 is an apocalyptic number.

120721200902 is a deficient number, since it is larger than the sum of its proper divisors (60778263898).

120721200902 is a wasteful number, since it uses less digits than its factorization.

120721200902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64687.

The product of its (nonzero) digits is 1008, while the sum is 26.

Adding to 120721200902 its reverse (209002127021), we get a palindrome (329723327923).

The spelling of 120721200902 in words is "one hundred twenty billion, seven hundred twenty-one million, two hundred thousand, nine hundred two".