22201212111 has 12 divisors (see below), whose sum is σ = 32053821768. Its totient is φ = 13662284064.

The previous prime is 22201212107. The next prime is 22201212113. The reversal of 22201212111 is 11121210222.

It is not a de Polignac number, because 22201212111 - 2² = 22201212107 is a prime.

It is a super-2 number, since 2×22201212111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201212113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21894180 + ... + 21895193.

It is an arithmetic number, because the mean of its divisors is an integer number (2671151814).

Almost surely, 2^22201212111 is an apocalyptic number.

22201212111 is a deficient number, since it is larger than the sum of its proper divisors (9852609657).

22201212111 is a wasteful number, since it uses less digits than its factorization.

22201212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43789402 (or 43789389 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22201212111 its reverse (11121210222), we get a palindrome (33322422333).

The spelling of 22201212111 in words is "twenty-two billion, two hundred one million, two hundred twelve thousand, one hundred eleven".