21425632112312 has 8 divisors (see below), whose sum is σ = 40173060210600. Its totient is φ = 10712816056152.

The previous prime is 21425632112263. The next prime is 21425632112321. The reversal of 21425632112312 is 21321123652412.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×21425632112312² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1339102007012 + ... + 1339102007027.

It is an arithmetic number, because the mean of its divisors is an integer number (5021632526325).

Almost surely, 2^{21425632112312} is an apocalyptic number.

It is an amenable number.

21425632112312 is a deficient number, since it is larger than the sum of its proper divisors (18747428098288).

21425632112312 is a wasteful number, since it uses less digits than its factorization.

21425632112312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2678204014045 (or 2678204014041 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

Adding to 21425632112312 its reverse (21321123652412), we get a palindrome (42746755764724).

The spelling of 21425632112312 in words is "twenty-one trillion, four hundred twenty-five billion, six hundred thirty-two million, one hundred twelve thousand, three hundred twelve".