22421910691684 has 243 divisors, whose sum is σ = 48160564302123. Its totient is φ = 9106997380992.

The previous prime is 22421910691633. The next prime is 22421910691711. The reversal of 22421910691684 is 48619601912422.

The square root of 22421910691684 is 4735178.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1134391146084 + 21287519545600 = 1065078^2 + 4613840^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 205705602622 + ... + 205705602730.

Almost surely, 2^{22421910691684} is an apocalyptic number.

22421910691684 is the 4735178-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22421910691684

22421910691684 is an abundant number, since it is smaller than the sum of its proper divisors (25738653610439).

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

22421910691684 is a wasteful number, since it uses less digits than its factorization.

22421910691684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 55.

The spelling of 22421910691684 in words is "twenty-two trillion, four hundred twenty-one billion, nine hundred ten million, six hundred ninety-one thousand, six hundred eighty-four".