21605357233022 has 8 divisors (see below), whose sum is σ = 32641187187000. Its totient is φ = 10724961504024.

The previous prime is 21605357233003. The next prime is 21605357233037. The reversal of 21605357233022 is 22033275350612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21605357233022² (a number of 27 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 in 3 ways as a sum of consecutive naturals, for example, 38858555897 + ... + 38858556452.

It is an arithmetic number, because the mean of its divisors is an integer number (4080148398375).

Almost surely, 2^{21605357233022} is an apocalyptic number.

21605357233022 is a deficient number, since it is larger than the sum of its proper divisors (11035829953978).

21605357233022 is a wasteful number, since it uses less digits than its factorization.

21605357233022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77717112490.

The product of its (nonzero) digits is 453600, while the sum is 41.

The spelling of 21605357233022 in words is "twenty-one trillion, six hundred five billion, three hundred fifty-seven million, two hundred thirty-three thousand, twenty-two".