21616222123626 has 32 divisors (see below), whose sum is σ = 46558230159168. Its totient is φ = 6651114800640.

The previous prime is 21616222123607. The next prime is 21616222123651. The reversal of 21616222123626 is 62632122261612.

It is a super-2 number, since 2×21616222123626² (a number of 27 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 21352861 + ... + 22342271.

It is an arithmetic number, because the mean of its divisors is an integer number (1454944692474).

Almost surely, 2^{21616222123626} is an apocalyptic number.

21616222123626 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21616222123626 is an abundant number, since it is smaller than the sum of its proper divisors (24942008035542).

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

21616222123626 is a wasteful number, since it uses less digits than its factorization.

21616222123626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269526.

The product of its digits is 248832, while the sum is 42.

The spelling of 21616222123626 in words is "twenty-one trillion, six hundred sixteen billion, two hundred twenty-two million, one hundred twenty-three thousand, six hundred twenty-six".