2211210111121 has 4 divisors (see below), whose sum is σ = 2412229212144. Its totient is φ = 2010191010100.

The previous prime is 2211210111073. The next prime is 2211210111157. The reversal of 2211210111121 is 1211110121122.

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 2211210111121 - 2³⁹ = 1661454297233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2211210111095 and 2211210111104.

It is not an unprimeable number, because it can be changed into a prime (2211210118121) 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, 100509550495 + ... + 100509550516.

It is an arithmetic number, because the mean of its divisors is an integer number (603057303036).

Almost surely, 2^{2211210111121} is an apocalyptic number.

It is an amenable number.

2211210111121 is a deficient number, since it is larger than the sum of its proper divisors (201019101023).

2211210111121 is a wasteful number, since it uses less digits than its factorization.

2211210111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201019101022.

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

Adding to 2211210111121 its reverse (1211110121122), we get a palindrome (3422320232243).

The spelling of 2211210111121 in words is "two trillion, two hundred eleven billion, two hundred ten million, one hundred eleven thousand, one hundred twenty-one".