21190009112 has 48 divisors (see below), whose sum is σ = 41606061000. Its totient is φ = 10116729216.

The previous prime is 21190009073. The next prime is 21190009147.

21190009112 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2615564 + ... + 2623652.

Almost surely, 2^21190009112 is an apocalyptic number.

It is an amenable number.

21190009112 is a deficient number, since it is larger than the sum of its proper divisors (20416051888).

21190009112 is a wasteful number, since it uses less digits than its factorization.

21190009112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8760 (or 8733 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 26.

The spelling of 21190009112 in words is "twenty-one billion, one hundred ninety million, nine thousand, one hundred twelve".