22144234231240 has 64 divisors (see below), whose sum is σ = 54358054594560. Its totient is φ = 8051852497920.

The previous prime is 22144234231213. The next prime is 22144234231241. The reversal of 22144234231240 is 4213243244122.

It is a junction number, because it is equal to n+sod(n) for n = 22144234231196 and 22144234231205.

It is not an unprimeable number, because it can be changed into a prime (22144234231241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4106617 + ... + 7820023.

It is an arithmetic number, because the mean of its divisors is an integer number (849344603040).

Almost surely, 2^{22144234231240} is an apocalyptic number.

22144234231240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22144234231240 is an abundant number, since it is smaller than the sum of its proper divisors (32213820363320).

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

22144234231240 is a wasteful number, since it uses less digits than its factorization.

22144234231240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3726982 (or 3726978 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 22144234231240 its reverse (4213243244122), we get a palindrome (26357477475362).

The spelling of 22144234231240 in words is "twenty-two trillion, one hundred forty-four billion, two hundred thirty-four million, two hundred thirty-one thousand, two hundred forty".