1122020221111 has 16 divisors (see below), whose sum is σ = 1187006607360. Its totient is φ = 1059164552160.

The previous prime is 1122020221099. The next prime is 1122020221129. The reversal of 1122020221111 is 1111220202211.

It is a cyclic number.

It is not a de Polignac number, because 1122020221111 - 2¹⁵ = 1122020188343 is a prime.

It is a super-4 number, since 4×1122020221111⁴ (a number of 49 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122020221181) 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, 2556700 + ... + 2963233.

It is an arithmetic number, because the mean of its divisors is an integer number (74187912960).

Almost surely, 2^{1122020221111} is an apocalyptic number.

1122020221111 is a deficient number, since it is larger than the sum of its proper divisors (64986386249).

1122020221111 is an equidigital number, since it uses as much as digits as its factorization.

1122020221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5520126.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1122020221111 its reverse (1111220202211), we get a palindrome (2233240423322).

It can be divided in two parts, 11220202211 and 11, that multiplied together give a palindrome (123422224321).

The spelling of 1122020221111 in words is "one trillion, one hundred twenty-two billion, twenty million, two hundred twenty-one thousand, one hundred eleven".