22121120120242 has 16 divisors (see below), whose sum is σ = 38982673219392. Its totient is φ = 9281588861520.

The previous prime is 22121120120219. The next prime is 22121120120261. The reversal of 22121120120242 is 24202102112122.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38673286638 + ... + 38673287209.

It is an arithmetic number, because the mean of its divisors is an integer number (2436417076212).

Almost surely, 2^{22121120120242} is an apocalyptic number.

22121120120242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22121120120242 is a deficient number, since it is larger than the sum of its proper divisors (16861553099150).

22121120120242 is a wasteful number, since it uses less digits than its factorization.

22121120120242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77346573873.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 22121120120242 its reverse (24202102112122), we get a palindrome (46323222232364).

The spelling of 22121120120242 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred twenty million, one hundred twenty thousand, two hundred forty-two".