2212220121111 has 96 divisors (see below), whose sum is σ = 4406322805248. Its totient is φ = 1032134296320.

The previous prime is 2212220121091. The next prime is 2212220121119. The reversal of 2212220121111 is 1111210222122.

2212220121111 is a `hidden beast` number, since 2 + 212 + 220 + 121 + 111 = 666.

It is not a de Polignac number, because 2212220121111 - 2⁶ = 2212220121047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212220121119) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2985001 + ... + 3651666.

It is an arithmetic number, because the mean of its divisors is an integer number (45899195888).

Almost surely, 2^{2212220121111} is an apocalyptic number.

2212220121111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2212220121111 is a deficient number, since it is larger than the sum of its proper divisors (2194102684137).

2212220121111 is a wasteful number, since it uses less digits than its factorization.

2212220121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6636741 (or 6636738 counting only the distinct ones).

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

Adding to 2212220121111 its reverse (1111210222122), we get a palindrome (3323430343233).

The spelling of 2212220121111 in words is "two trillion, two hundred twelve billion, two hundred twenty million, one hundred twenty-one thousand, one hundred eleven".