21101020192 has 48 divisors (see below), whose sum is σ = 47947419072. Its totient is φ = 8953747200.

The previous prime is 21101020181. The next prime is 21101020229. The reversal of 21101020192 is 29102010112.

It is a happy 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, 443718 + ... + 488965.

It is an arithmetic number, because the mean of its divisors is an integer number (998904564).

Almost surely, 2^21101020192 is an apocalyptic number.

It is an amenable number.

21101020192 is an abundant number, since it is smaller than the sum of its proper divisors (26846398880).

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

21101020192 is a wasteful number, since it uses less digits than its factorization.

21101020192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932801 (or 932793 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 21101020192 in words is "twenty-one billion, one hundred one million, twenty thousand, one hundred ninety-two".