22111222012111 has 4 divisors (see below), whose sum is σ = 22111687549224. Its totient is φ = 22110756475000.

The previous prime is 22111222012097. The next prime is 22111222012123. The reversal of 22111222012111 is 11121022211122.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22111222012111 - 2¹³ = 22111222003919 is a prime.

It is a super-2 number, since 2×22111222012111² (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 (22111222012811) 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, 232697305 + ... + 232792306.

It is an arithmetic number, because the mean of its divisors is an integer number (5527921887306).

Almost surely, 2^{22111222012111} is an apocalyptic number.

22111222012111 is a deficient number, since it is larger than the sum of its proper divisors (465537113).

22111222012111 is an equidigital number, since it uses as much as digits as its factorization.

22111222012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465537112.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 22111222012111 its reverse (11121022211122), we get a palindrome (33232244223233).

The spelling of 22111222012111 in words is "twenty-two trillion, one hundred eleven billion, two hundred twenty-two million, twelve thousand, one hundred eleven".