21122325340242 has 32 divisors (see below), whose sum is σ = 48279831955584. Its totient is φ = 6034921200000.

The previous prime is 21122325340241. The next prime is 21122325340247. The reversal of 21122325340242 is 24204352322112.

It is not an unprimeable number, because it can be changed into a prime (21122325340241) 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, 8613492 + ... + 10790592.

It is an arithmetic number, because the mean of its divisors is an integer number (1508744748612).

Almost surely, 2^{21122325340242} is an apocalyptic number.

21122325340242 is an abundant number, since it is smaller than the sum of its proper divisors (27157506615342).

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

21122325340242 is a wasteful number, since it uses less digits than its factorization.

21122325340242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408114.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 21122325340242 its reverse (24204352322112), we get a palindrome (45326677662354).

The spelling of 21122325340242 in words is "twenty-one trillion, one hundred twenty-two billion, three hundred twenty-five million, three hundred forty thousand, two hundred forty-two".