22120011111 has 16 divisors (see below), whose sum is σ = 32493126528. Its totient is φ = 13273332000.

The previous prime is 22120011103. The next prime is 22120011119. The reversal of 22120011111 is 11111002122.

It is an interprime number because it is at equal distance from previous prime (22120011103) and next prime (22120011119).

It is not a de Polignac number, because 22120011111 - 2³ = 22120011103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120011119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3315001 + ... + 3321666.

It is an arithmetic number, because the mean of its divisors is an integer number (2030820408).

Almost surely, 2^22120011111 is an apocalyptic number.

22120011111 is a deficient number, since it is larger than the sum of its proper divisors (10373115417).

22120011111 is a wasteful number, since it uses less digits than its factorization.

22120011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6636782.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 22120011111 its reverse (11111002122), we get a palindrome (33231013233).

The spelling of 22120011111 in words is "twenty-two billion, one hundred twenty million, eleven thousand, one hundred eleven".