21268544586212 has 24 divisors (see below), whose sum is σ = 46404097279680. Its totient is φ = 8286445942560.

The previous prime is 21268544586197. The next prime is 21268544586259.

21268544586212 is nontrivially palindromic in base 10.

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, 34526857787 + ... + 34526858402.

It is an arithmetic number, because the mean of its divisors is an integer number (1933504053320).

Almost surely, 2^{21268544586212} is an apocalyptic number.

21268544586212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21268544586212 is an abundant number, since it is smaller than the sum of its proper divisors (25135552693468).

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

21268544586212 is a wasteful number, since it uses less digits than its factorization.

21268544586212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69053716211 (or 69053716209 counting only the distinct ones).

The product of its digits is 14745600, while the sum is 56.

The spelling of 21268544586212 in words is "twenty-one trillion, two hundred sixty-eight billion, five hundred forty-four million, five hundred eighty-six thousand, two hundred twelve".