22211221012211 has 48 divisors (see below), whose sum is σ = 29879432604000. Its totient is φ = 16270257669120.

The previous prime is 22211221012207. The next prime is 22211221012213. The reversal of 22211221012211 is 11221012211222.

It is not a de Polignac number, because 22211221012211 - 2² = 22211221012207 is a prime.

It is a super-2 number, since 2×22211221012211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22211221012213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6395165 + ... + 9236913.

It is an arithmetic number, because the mean of its divisors is an integer number (622488179250).

Almost surely, 2^{22211221012211} is an apocalyptic number.

22211221012211 is a deficient number, since it is larger than the sum of its proper divisors (7668211591789).

22211221012211 is a wasteful number, since it uses less digits than its factorization.

22211221012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2842644 (or 2842637 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22211221012211 its reverse (11221012211222), we get a palindrome (33432233223433).

The spelling of 22211221012211 in words is "twenty-two trillion, two hundred eleven billion, two hundred twenty-one million, twelve thousand, two hundred eleven".