211222212102111 has 12 divisors (see below), whose sum is σ = 327609961627992. Its totient is φ = 120698406915408.

The previous prime is 211222212102101. The next prime is 211222212102131. The reversal of 211222212102111 is 111201212222112.

211222212102111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211222212102111 - 2²⁹ = 211221675231199 is a prime.

It is a super-2 number, since 2×211222212102111² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222212102101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 718442898160 + ... + 718442898453.

It is an arithmetic number, because the mean of its divisors is an integer number (27300830135666).

Almost surely, 2^{211222212102111} is an apocalyptic number.

211222212102111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

211222212102111 is a deficient number, since it is larger than the sum of its proper divisors (116387749525881).

211222212102111 is a wasteful number, since it uses less digits than its factorization.

211222212102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436885796630 (or 1436885796623 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 211222212102111 its reverse (111201212222112), we get a palindrome (322423424324223).

The spelling of 211222212102111 in words is "two hundred eleven trillion, two hundred twenty-two billion, two hundred twelve million, one hundred two thousand, one hundred eleven".