220111101121 has 4 divisors (see below), whose sum is σ = 220141330992. Its totient is φ = 220080871252.

The previous prime is 220111101109. The next prime is 220111101139. The reversal of 220111101121 is 121101111022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220111101121 - 2²⁷ = 219976883393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220111501121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15104011 + ... + 15118576.

It is an arithmetic number, because the mean of its divisors is an integer number (55035332748).

Almost surely, 2^220111101121 is an apocalyptic number.

It is an amenable number.

220111101121 is a deficient number, since it is larger than the sum of its proper divisors (30229871).

220111101121 is an equidigital number, since it uses as much as digits as its factorization.

220111101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30229870.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 220111101121 its reverse (121101111022), we get a palindrome (341212212143).

Subtracting from 220111101121 its reverse (121101111022), we obtain a palindrome (99009990099).

The spelling of 220111101121 in words is "two hundred twenty billion, one hundred eleven million, one hundred one thousand, one hundred twenty-one".