1222011122111 has 32 divisors (see below), whose sum is σ = 1397155132800. Its totient is φ = 1058817576960.

The previous prime is 1222011122071. The next prime is 1222011122117. The reversal of 1222011122111 is 1112211102221.

It is not a de Polignac number, because 1222011122111 - 2¹⁴ = 1222011105727 is a prime.

It is a super-2 number, since 2×1222011122111² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222011122111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222011122117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192167150 + ... + 192173508.

It is an arithmetic number, because the mean of its divisors is an integer number (43661097900).

Almost surely, 2^{1222011122111} is an apocalyptic number.

1222011122111 is a deficient number, since it is larger than the sum of its proper divisors (175144010689).

1222011122111 is a wasteful number, since it uses less digits than its factorization.

1222011122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8579.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1222011122111 its reverse (1112211102221), we get a palindrome (2334222224332).

The spelling of 1222011122111 in words is "one trillion, two hundred twenty-two billion, eleven million, one hundred twenty-two thousand, one hundred eleven".