21222362126412 has 36 divisors (see below), whose sum is σ = 53752066346160. Its totient is φ = 7060056844512.

The previous prime is 21222362126363. The next prime is 21222362126437. The reversal of 21222362126412 is 21462126322212.

21222362126412 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 2 + 3 + 6 + 2 + 1 + 2 + 641 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×21222362126412³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 585975987 + ... + 586012202.

It is an arithmetic number, because the mean of its divisors is an integer number (1493112954060).

Almost surely, 2^{21222362126412} is an apocalyptic number.

It is an amenable number.

21222362126412 is an abundant number, since it is smaller than the sum of its proper divisors (32529704219748).

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

21222362126412 is a wasteful number, since it uses less digits than its factorization.

21222362126412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171988702 (or 1171988697 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

Adding to 21222362126412 its reverse (21462126322212), we get a palindrome (42684488448624).

The spelling of 21222362126412 in words is "twenty-one trillion, two hundred twenty-two billion, three hundred sixty-two million, one hundred twenty-six thousand, four hundred twelve".