21112725370 has 16 divisors (see below), whose sum is σ = 41457715488. Its totient is φ = 7677354640.

The previous prime is 21112725341. The next prime is 21112725397. The reversal of 21112725370 is 7352721112.

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, 95966824 + ... + 95967043.

It is an arithmetic number, because the mean of its divisors is an integer number (2591107218).

Almost surely, 2^21112725370 is an apocalyptic number.

21112725370 is a deficient number, since it is larger than the sum of its proper divisors (20344990118).

21112725370 is a wasteful number, since it uses less digits than its factorization.

21112725370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191933885.

The product of its (nonzero) digits is 5880, while the sum is 31.

The spelling of 21112725370 in words is "twenty-one billion, one hundred twelve million, seven hundred twenty-five thousand, three hundred seventy".