21112975368192 has 224 divisors, whose sum is σ = 56940681404160. Its totient is φ = 6957616332800.

The previous prime is 21112975368167. The next prime is 21112975368241. The reversal of 21112975368192 is 29186357921112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1113602809 + ... + 1113621767.

Almost surely, 2^{21112975368192} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21112975368192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28470340702080).

21112975368192 is an abundant number, since it is smaller than the sum of its proper divisors (35827706035968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21112975368192 is a wasteful number, since it uses less digits than its factorization.

21112975368192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19502 (or 19478 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 57.

The spelling of 21112975368192 in words is "twenty-one trillion, one hundred twelve billion, nine hundred seventy-five million, three hundred sixty-eight thousand, one hundred ninety-two".