22131321401240 has 16 divisors (see below), whose sum is σ = 49795473152880. Its totient is φ = 8852528560480.

The previous prime is 22131321401179. The next prime is 22131321401249. The reversal of 22131321401240 is 4210412313122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22131321401249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276641517476 + ... + 276641517555.

It is an arithmetic number, because the mean of its divisors is an integer number (3112217072055).

Almost surely, 2^{22131321401240} is an apocalyptic number.

22131321401240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22131321401240 is an abundant number, since it is smaller than the sum of its proper divisors (27664151751640).

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

22131321401240 is a wasteful number, since it uses less digits than its factorization.

22131321401240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553283035042 (or 553283035038 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 22131321401240 its reverse (4210412313122), we get a palindrome (26341733714362).

The spelling of 22131321401240 in words is "twenty-two trillion, one hundred thirty-one billion, three hundred twenty-one million, four hundred one thousand, two hundred forty".