102721032112 has 20 divisors (see below), whose sum is σ = 199155887136. Its totient is φ = 51325964480.

The previous prime is 102721032083. The next prime is 102721032119. The reversal of 102721032112 is 211230127201.

It is a super-2 number, since 2×102721032112² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102721032119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2134939 + ... + 2182522.

Almost surely, 2^102721032112 is an apocalyptic number.

It is an amenable number.

102721032112 is a deficient number, since it is larger than the sum of its proper divisors (96434855024).

102721032112 is a wasteful number, since it uses less digits than its factorization.

102721032112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4318956 (or 4318950 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 102721032112 its reverse (211230127201), we get a palindrome (313951159313).

The spelling of 102721032112 in words is "one hundred two billion, seven hundred twenty-one million, thirty-two thousand, one hundred twelve".