2211202121 has 16 divisors (see below), whose sum is σ = 2549491200. Its totient is φ = 1903603968.

The previous prime is 2211202109. The next prime is 2211202153. The reversal of 2211202121 is 1212021122.

It is not a de Polignac number, because 2211202121 - 2³⁰ = 1137460297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2211202096 and 2211202105.

It is not an unprimeable number, because it can be changed into a prime (2211201121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108665 + ... + 127398.

It is an arithmetic number, because the mean of its divisors is an integer number (159343200).

Almost surely, 2^2211202121 is an apocalyptic number.

It is an amenable number.

2211202121 is a deficient number, since it is larger than the sum of its proper divisors (338289079).

2211202121 is a wasteful number, since it uses less digits than its factorization.

2211202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236128.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2211202121 is about 47023.4209835907. The cubic root of 2211202121 is about 1302.7951929108.

Adding to 2211202121 its reverse (1212021122), we get a palindrome (3423223243).

The spelling of 2211202121 in words is "two billion, two hundred eleven million, two hundred two thousand, one hundred twenty-one".