2201211122111 has 4 divisors (see below), whose sum is σ = 2330694129312. Its totient is φ = 2071728114912.

The previous prime is 2201211122101. The next prime is 2201211122153. The reversal of 2201211122111 is 1112211121022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2201211122111 - 2²⁶ = 2201144013247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 129483007183 = 2201211122111 / (2 + 2 + 0 + 1 + 2 + 1 + 1 + 1 + 2 + 2 + 1 + 1 + 1).

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 2201211122111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201211122101) 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, 64741503575 + ... + 64741503608.

It is an arithmetic number, because the mean of its divisors is an integer number (582673532328).

Almost surely, 2^{2201211122111} is an apocalyptic number.

2201211122111 is a deficient number, since it is larger than the sum of its proper divisors (129483007201).

2201211122111 is a wasteful number, since it uses less digits than its factorization.

2201211122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129483007200.

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

Adding to 2201211122111 its reverse (1112211121022), we get a palindrome (3313422243133).

The spelling of 2201211122111 in words is "two trillion, two hundred one billion, two hundred eleven million, one hundred twenty-two thousand, one hundred eleven".