22121022212211 has 32 divisors (see below), whose sum is σ = 31931582312448. Its totient is φ = 13540917519360.

The previous prime is 22121022212171. The next prime is 22121022212251. The reversal of 22121022212211 is 11221222012122.

It is an interprime number because it is at equal distance from previous prime (22121022212171) and next prime (22121022212251).

It is not a de Polignac number, because 22121022212211 - 2⁹ = 22121022211699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22121022212251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154472835 + ... + 154615971.

It is an arithmetic number, because the mean of its divisors is an integer number (997861947264).

Almost surely, 2^{22121022212211} is an apocalyptic number.

22121022212211 is a deficient number, since it is larger than the sum of its proper divisors (9810560100237).

22121022212211 is a wasteful number, since it uses less digits than its factorization.

22121022212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164091.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22121022212211 its reverse (11221222012122), we get a palindrome (33342244224333).

The spelling of 22121022212211 in words is "twenty-two trillion, one hundred twenty-one billion, twenty-two million, two hundred twelve thousand, two hundred eleven".