21626224062421 has 32 divisors (see below), whose sum is σ = 23864098377600. Its totient is φ = 19434310560000.

The previous prime is 21626224062419. The next prime is 21626224062427. The reversal of 21626224062421 is 12426042262612.

It is a cyclic number.

It is not a de Polignac number, because 21626224062421 - 2¹ = 21626224062419 is a prime.

It is a super-3 number, since 3×21626224062421³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21626224062427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2067709090 + ... + 2067719548.

It is an arithmetic number, because the mean of its divisors is an integer number (745753074300).

Almost surely, 2^{21626224062421} is an apocalyptic number.

It is an amenable number.

21626224062421 is a deficient number, since it is larger than the sum of its proper divisors (2237874315179).

21626224062421 is a wasteful number, since it uses less digits than its factorization.

21626224062421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13381.

The product of its (nonzero) digits is 221184, while the sum is 40.

The spelling of 21626224062421 in words is "twenty-one trillion, six hundred twenty-six billion, two hundred twenty-four million, sixty-two thousand, four hundred twenty-one".