21412022644 has 24 divisors (see below), whose sum is σ = 37578308768. Its totient is φ = 10675406880.

The previous prime is 21412022629. The next prime is 21412022663. The reversal of 21412022644 is 44622021412.

It is a congruent 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, 2272447 + ... + 2281849.

Almost surely, 2^21412022644 is an apocalyptic number.

It is an amenable number.

21412022644 is a deficient number, since it is larger than the sum of its proper divisors (16166286124).

21412022644 is a wasteful number, since it uses less digits than its factorization.

21412022644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10975 (or 10973 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The spelling of 21412022644 in words is "twenty-one billion, four hundred twelve million, twenty-two thousand, six hundred forty-four".