2111222111201 has 32 divisors (see below), whose sum is σ = 2637562152960. Its totient is φ = 1647983232000.

The previous prime is 2111222111191. The next prime is 2111222111209. The reversal of 2111222111201 is 1021112221112.

It is not a de Polignac number, because 2111222111201 - 2¹⁰ = 2111222110177 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2111222111201.

It is not an unprimeable number, because it can be changed into a prime (2111222111209) 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, 26923751 + ... + 27002051.

It is an arithmetic number, because the mean of its divisors is an integer number (82423817280).

Almost surely, 2^{2111222111201} is an apocalyptic number.

It is an amenable number.

2111222111201 is a deficient number, since it is larger than the sum of its proper divisors (526340041759).

2111222111201 is a wasteful number, since it uses less digits than its factorization.

2111222111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85665.

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

Adding to 2111222111201 its reverse (1021112221112), we get a palindrome (3132334332313).

The spelling of 2111222111201 in words is "two trillion, one hundred eleven billion, two hundred twenty-two million, one hundred eleven thousand, two hundred one".