21122012120122 has 8 divisors (see below), whose sum is σ = 31701030134400. Its totient is φ = 10555002075324.

The previous prime is 21122012120119. The next prime is 21122012120129. The reversal of 21122012120122 is 22102121022112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21122012120122² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21122012120122.

It is not an unprimeable number, because it can be changed into a prime (21122012120129) 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, 3001987972 + ... + 3001995007.

It is an arithmetic number, because the mean of its divisors is an integer number (3962628766800).

Almost surely, 2^{21122012120122} is an apocalyptic number.

21122012120122 is a deficient number, since it is larger than the sum of its proper divisors (10579018014278).

21122012120122 is a wasteful number, since it uses less digits than its factorization.

21122012120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6003984740.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21122012120122 its reverse (22102121022112), we get a palindrome (43224133142234).

The spelling of 21122012120122 in words is "twenty-one trillion, one hundred twenty-two billion, twelve million, one hundred twenty thousand, one hundred twenty-two".