21227062996 has 12 divisors (see below), whose sum is σ = 37193283540. Its totient is φ = 10600410560.

The previous prime is 21227062993. The next prime is 21227062999. The reversal of 21227062996 is 69926072212.

It is an interprime number because it is at equal distance from previous prime (21227062993) and next prime (21227062999).

It can be written as a sum of positive squares in 2 ways, for example, as 16491696400 + 4735366596 = 128420^2 + 68814^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21227062993) 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, 3276595 + ... + 3283066.

It is an arithmetic number, because the mean of its divisors is an integer number (3099440295).

Almost surely, 2^21227062996 is an apocalyptic number.

It is an amenable number.

21227062996 is a deficient number, since it is larger than the sum of its proper divisors (15966220544).

21227062996 is a wasteful number, since it uses less digits than its factorization.

21227062996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6560474 (or 6560472 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 21227062996 in words is "twenty-one billion, two hundred twenty-seven million, sixty-two thousand, nine hundred ninety-six".