22421121154250 has 128 divisors (see below), whose sum is σ = 51693034498560. Its totient is φ = 7091138995200.

The previous prime is 22421121154249. The next prime is 22421121154253. The reversal of 22421121154250 is 5245112112422.

It is not an unprimeable number, because it can be changed into a prime (22421121154253) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33543809 + ... + 34205691.

It is an arithmetic number, because the mean of its divisors is an integer number (403851832020).

Almost surely, 2^{22421121154250} is an apocalyptic number.

22421121154250 is an abundant number, since it is smaller than the sum of its proper divisors (29271913344310).

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

22421121154250 is a wasteful number, since it uses less digits than its factorization.

22421121154250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663409 (or 663399 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

Adding to 22421121154250 its reverse (5245112112422), we get a palindrome (27666233266672).

The spelling of 22421121154250 in words is "twenty-two trillion, four hundred twenty-one billion, one hundred twenty-one million, one hundred fifty-four thousand, two hundred fifty".