21222130431123 has 24 divisors (see below), whose sum is σ = 32298803760080. Its totient is φ = 13390475420160.

The previous prime is 21222130431097. The next prime is 21222130431157. The reversal of 21222130431123 is 32113403122212.

21222130431123 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 21 + 304 + 311 + 23 = 666.

It is not a de Polignac number, because 21222130431123 - 2¹³ = 21222130422931 is a prime.

It is a super-2 number, since 2×21222130431123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222130471123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59894038 + ... + 60247323.

Almost surely, 2^{21222130431123} is an apocalyptic number.

21222130431123 is a deficient number, since it is larger than the sum of its proper divisors (11076673328957).

21222130431123 is a wasteful number, since it uses less digits than its factorization.

21222130431123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120142419 (or 120142416 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 21222130431123 its reverse (32113403122212), we get a palindrome (53335533553335).

The spelling of 21222130431123 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred thirty million, four hundred thirty-one thousand, one hundred twenty-three".