21223102122985 has 16 divisors (see below), whose sum is σ = 29128725504000. Its totient is φ = 14541605873856.

The previous prime is 21223102122961. The next prime is 21223102123007. The reversal of 21223102122985 is 58922120132212.

It is a cyclic number.

It is not a de Polignac number, because 21223102122985 - 2¹³ = 21223102114793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237005410 + ... + 237094939.

It is an arithmetic number, because the mean of its divisors is an integer number (1820545344000).

Almost surely, 2^{21223102122985} is an apocalyptic number.

It is an amenable number.

21223102122985 is a deficient number, since it is larger than the sum of its proper divisors (7905623381015).

21223102122985 is a wasteful number, since it uses less digits than its factorization.

21223102122985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474101640.

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 21223102122985 in words is "twenty-one trillion, two hundred twenty-three billion, one hundred two million, one hundred twenty-two thousand, nine hundred eighty-five".