2122212021111 has 96 divisors (see below), whose sum is σ = 3791288592000. Its totient is φ = 1113939247104.

The previous prime is 2122212021103. The next prime is 2122212021221. The reversal of 2122212021111 is 1111202122212.

2122212021111 is a `hidden beast` number, since 212 + 221 + 20 + 211 + 1 + 1 = 666.

It is not a de Polignac number, because 2122212021111 - 2³ = 2122212021103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122212021101) 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, 204663735 + ... + 204674103.

It is an arithmetic number, because the mean of its divisors is an integer number (39492589500).

Almost surely, 2^{2122212021111} is an apocalyptic number.

2122212021111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2122212021111 is a deficient number, since it is larger than the sum of its proper divisors (1669076570889).

2122212021111 is a wasteful number, since it uses less digits than its factorization.

2122212021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11593 (or 11590 counting only the distinct ones).

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

Adding to 2122212021111 its reverse (1111202122212), we get a palindrome (3233414143323).

The spelling of 2122212021111 in words is "two trillion, one hundred twenty-two billion, two hundred twelve million, twenty-one thousand, one hundred eleven".