21226664523063 has 8 divisors (see below), whose sum is σ = 28643209959168. Its totient is φ = 13980614384504.

The previous prime is 21226664523047. The next prime is 21226664523101. The reversal of 21226664523063 is 36032546662212.

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

It is a cyclic number.

It is not a de Polignac number, because 21226664523063 - 2⁴ = 21226664523047 is a prime.

It is a super-2 number, since 2×21226664523063² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21226664523013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42623824095 + ... + 42623824592.

It is an arithmetic number, because the mean of its divisors is an integer number (3580401244896).

Almost surely, 2^{21226664523063} is an apocalyptic number.

21226664523063 is a deficient number, since it is larger than the sum of its proper divisors (7416545436105).

21226664523063 is an equidigital number, since it uses as much as digits as its factorization.

21226664523063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85247648773.

The product of its (nonzero) digits is 3732480, while the sum is 48.

The spelling of 21226664523063 in words is "twenty-one trillion, two hundred twenty-six billion, six hundred sixty-four million, five hundred twenty-three thousand, sixty-three".