2201220121111 has 32 divisors (see below), whose sum is σ = 2611680215040. Its totient is φ = 1834374405600.

The previous prime is 2201220121099. The next prime is 2201220121171. The reversal of 2201220121111 is 1111210221022.

It is not a de Polignac number, because 2201220121111 - 2²⁷ = 2201085903383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201220121171) 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, 554601 + ... + 2170258.

It is an arithmetic number, because the mean of its divisors is an integer number (81615006720).

Almost surely, 2^{2201220121111} is an apocalyptic number.

2201220121111 is a deficient number, since it is larger than the sum of its proper divisors (410460093929).

2201220121111 is a wasteful number, since it uses less digits than its factorization.

2201220121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725027.

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

Adding to 2201220121111 its reverse (1111210221022), we get a palindrome (3312430342133).

The spelling of 2201220121111 in words is "two trillion, two hundred one billion, two hundred twenty million, one hundred twenty-one thousand, one hundred eleven".