22131322213240 has 32 divisors (see below), whose sum is σ = 49923483948000. Its totient is φ = 8829771735424.

The previous prime is 22131322213229. The next prime is 22131322213279. The reversal of 22131322213240 is 4231222313122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22131322213199 and 22131322213208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 711145180 + ... + 711176299.

It is an arithmetic number, because the mean of its divisors is an integer number (1560108873375).

Almost surely, 2^{22131322213240} is an apocalyptic number.

22131322213240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22131322213240 is an abundant number, since it is smaller than the sum of its proper divisors (27792161734760).

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

22131322213240 is a wasteful number, since it uses less digits than its factorization.

22131322213240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422321879 (or 1422321875 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 22131322213240 its reverse (4231222313122), we get a palindrome (26362544526362).

The spelling of 22131322213240 in words is "twenty-two trillion, one hundred thirty-one billion, three hundred twenty-two million, two hundred thirteen thousand, two hundred forty".