22122111011211 has 24 divisors (see below), whose sum is σ = 33636171114000. Its totient is φ = 13971771171072.

The previous prime is 22122111011207. The next prime is 22122111011243. The reversal of 22122111011211 is 11211011122122.

It is a happy number.

22122111011211 is a `hidden beast` number, since 221 + 2 + 211 + 10 + 11 + 211 = 666.

It is not a de Polignac number, because 22122111011211 - 2² = 22122111011207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22122111011201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36279495 + ... + 36884223.

It is an arithmetic number, because the mean of its divisors is an integer number (1401507129750).

Almost surely, 2^{22122111011211} is an apocalyptic number.

22122111011211 is a deficient number, since it is larger than the sum of its proper divisors (11514060102789).

22122111011211 is a wasteful number, since it uses less digits than its factorization.

22122111011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818683 (or 818680 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 22122111011211 its reverse (11211011122122), we get a palindrome (33333122133333).

The spelling of 22122111011211 in words is "twenty-two trillion, one hundred twenty-two billion, one hundred eleven million, eleven thousand, two hundred eleven".