21192406996 has 12 divisors (see below), whose sum is σ = 37149896448. Its totient is φ = 10578150872.

The previous prime is 21192406981. The next prime is 21192406997. The reversal of 21192406996 is 69960429112.

It is a super-2 number, since 2×21192406996² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21192406997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4510516 + ... + 4515211.

It is an arithmetic number, because the mean of its divisors is an integer number (3095824704).

Almost surely, 2^21192406996 is an apocalyptic number.

It is an amenable number.

21192406996 is a deficient number, since it is larger than the sum of its proper divisors (15957489452).

21192406996 is a wasteful number, since it uses less digits than its factorization.

21192406996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9026318 (or 9026316 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 49.

The spelling of 21192406996 in words is "twenty-one billion, one hundred ninety-two million, four hundred six thousand, nine hundred ninety-six".