122220211122111 has 16 divisors (see below), whose sum is σ = 162988279856640. Its totient is φ = 81466142515200.

The previous prime is 122220211122049. The next prime is 122220211122137. The reversal of 122220211122111 is 111221112022221.

It is not a de Polignac number, because 122220211122111 - 2¹⁵ = 122220211089343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122220211122311) 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, 600728160 + ... + 600931578.

It is an arithmetic number, because the mean of its divisors is an integer number (10186767491040).

Almost surely, 2^{122220211122111} is an apocalyptic number.

122220211122111 is a deficient number, since it is larger than the sum of its proper divisors (40768068734529).

122220211122111 is a wasteful number, since it uses less digits than its factorization.

122220211122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236846.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 122220211122111 its reverse (111221112022221), we get a palindrome (233441323144332).

The spelling of 122220211122111 in words is "one hundred twenty-two trillion, two hundred twenty billion, two hundred eleven million, one hundred twenty-two thousand, one hundred eleven".