122122021011111 has 24 divisors (see below), whose sum is σ = 192453610147344. Its totient is φ = 74006072847360.

The previous prime is 122122021011071. The next prime is 122122021011163. The reversal of 122122021011111 is 111110120221221.

It is a happy number.

122122021011111 is a `hidden beast` number, since 1 + 221 + 220 + 210 + 1 + 1 + 1 + 11 = 666.

It is not a de Polignac number, because 122122021011111 - 2¹¹ = 122122021009063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122122021012111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59597556 + ... + 61612601.

It is an arithmetic number, because the mean of its divisors is an integer number (8018900422806).

Almost surely, 2^{122122021011111} is an apocalyptic number.

122122021011111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122122021011111 is a deficient number, since it is larger than the sum of its proper divisors (70331589136233).

122122021011111 is a wasteful number, since it uses less digits than its factorization.

122122021011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121220351 (or 121220348 counting only the distinct ones).

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

Adding to 122122021011111 its reverse (111110120221221), we get a palindrome (233232141232332).

The spelling of 122122021011111 in words is "one hundred twenty-two trillion, one hundred twenty-two billion, twenty-one million, eleven thousand, one hundred eleven".