122220011222211 has 16 divisors (see below), whose sum is σ = 190571180290304. Its totient is φ = 68215820216544.

The previous prime is 122220011222189. The next prime is 122220011222219. The reversal of 122220011222211 is 112222110022221.

It is not a de Polignac number, because 122220011222211 - 2¹⁹ = 122220010697923 is a prime.

It is a super-2 number, since 2×122220011222211² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (122220011222219) 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, 67674423916 + ... + 67674425721.

It is an arithmetic number, because the mean of its divisors is an integer number (11910698768144).

Almost surely, 2^{122220011222211} is an apocalyptic number.

122220011222211 is a deficient number, since it is larger than the sum of its proper divisors (68351169068093).

122220011222211 is a wasteful number, since it uses less digits than its factorization.

122220011222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135348849690.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 122220011222211 its reverse (112222110022221), we get a palindrome (234442121244432).

The spelling of 122220011222211 in words is "one hundred twenty-two trillion, two hundred twenty billion, eleven million, two hundred twenty-two thousand, two hundred eleven".