72012103228 has 24 divisors (see below), whose sum is σ = 135752189552. Its totient is φ = 33227276544.

The previous prime is 72012103147. The next prime is 72012103297. The reversal of 72012103228 is 82230121027.

It is a super-2 number, since 2×72012103228² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72012103196 and 72012103205.

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, 4951 + ... + 379537.

Almost surely, 2^72012103228 is an apocalyptic number.

It is an amenable number.

72012103228 is a deficient number, since it is larger than the sum of its proper divisors (63740086324).

72012103228 is a wasteful number, since it uses less digits than its factorization.

72012103228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378301 (or 378299 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The spelling of 72012103228 in words is "seventy-two billion, twelve million, one hundred three thousand, two hundred twenty-eight".