22012212222111 has 4 divisors (see below), whose sum is σ = 29349616296152. Its totient is φ = 14674808148072.

The previous prime is 22012212222079. The next prime is 22012212222151. The reversal of 22012212222111 is 11122221221022.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22012212222111 - 2⁵ = 22012212222079 is a prime.

It is a super-2 number, since 2×22012212222111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012212222151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3668702037016 + ... + 3668702037021.

It is an arithmetic number, because the mean of its divisors is an integer number (7337404074038).

Almost surely, 2^{22012212222111} is an apocalyptic number.

22012212222111 is a deficient number, since it is larger than the sum of its proper divisors (7337404074041).

22012212222111 is an equidigital number, since it uses as much as digits as its factorization.

22012212222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7337404074040.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22012212222111 its reverse (11122221221022), we get a palindrome (33134433443133).

The spelling of 22012212222111 in words is "twenty-two trillion, twelve billion, two hundred twelve million, two hundred twenty-two thousand, one hundred eleven".