22121201012211 has 64 divisors (see below), whose sum is σ = 39105358387200. Its totient is φ = 12083962226688.

The previous prime is 22121201012149. The next prime is 22121201012221. The reversal of 22121201012211 is 11221010212122.

22121201012211 is a `hidden beast` number, since 221 + 2 + 120 + 101 + 221 + 1 = 666.

It is not a de Polignac number, because 22121201012211 - 2¹⁰ = 22121201011187 is a prime.

It is a super-2 number, since 2×22121201012211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22121201012221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5877495 + ... + 8876223.

It is an arithmetic number, because the mean of its divisors is an integer number (611021224800).

Almost surely, 2^{22121201012211} is an apocalyptic number.

22121201012211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22121201012211 is a deficient number, since it is larger than the sum of its proper divisors (16984157374989).

22121201012211 is a wasteful number, since it uses less digits than its factorization.

22121201012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000465 (or 3000459 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22121201012211 its reverse (11221010212122), we get a palindrome (33342211224333).

The spelling of 22121201012211 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred one million, twelve thousand, two hundred eleven".