22121112012011 has 4 divisors (see below), whose sum is σ = 22124122104000. Its totient is φ = 22118101920024.

The previous prime is 22121112011989. The next prime is 22121112012019. The reversal of 22121112012011 is 11021021112122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22121112012011 - 2²⁶ = 22121044903147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121112012019) 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, 1505034971 + ... + 1505049668.

It is an arithmetic number, because the mean of its divisors is an integer number (5531030526000).

Almost surely, 2^{22121112012011} is an apocalyptic number.

22121112012011 is a deficient number, since it is larger than the sum of its proper divisors (3010091989).

22121112012011 is an equidigital number, since it uses as much as digits as its factorization.

22121112012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010091988.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 22121112012011 its reverse (11021021112122), we get a palindrome (33142133124133).

The spelling of 22121112012011 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred twelve million, twelve thousand, eleven".