21456753022 has 4 divisors (see below), whose sum is σ = 32185129536. Its totient is φ = 10728376510.

The previous prime is 21456752987. The next prime is 21456753119. The reversal of 21456753022 is 22035765412.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×21456753022² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5364188254 + ... + 5364188257.

It is an arithmetic number, because the mean of its divisors is an integer number (8046282384).

Almost surely, 2^21456753022 is an apocalyptic number.

21456753022 is a deficient number, since it is larger than the sum of its proper divisors (10728376514).

21456753022 is a wasteful number, since it uses less digits than its factorization.

21456753022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10728376513.

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 21456753022 in words is "twenty-one billion, four hundred fifty-six million, seven hundred fifty-three thousand, twenty-two".