2122202121 has 12 divisors (see below), whose sum is σ = 3064008528. Its totient is φ = 1305970224.

The previous prime is 2122202119. The next prime is 2122202143. The reversal of 2122202121 is 1212022212.

It is not a de Polignac number, because 2122202121 - 2¹ = 2122202119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2122202121.

It is not an unprimeable number, because it can be changed into a prime (2122202171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2092395 + ... + 2093408.

It is an arithmetic number, because the mean of its divisors is an integer number (255334044).

Almost surely, 2^2122202121 is an apocalyptic number.

It is an amenable number.

2122202121 is a deficient number, since it is larger than the sum of its proper divisors (941806407).

2122202121 is a wasteful number, since it uses less digits than its factorization.

2122202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4185832 (or 4185819 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2122202121 is about 46067.3650320919. The cubic root of 2122202121 is about 1285.0763016459.

Adding to 2122202121 its reverse (1212022212), we get a palindrome (3334224333).

The spelling of 2122202121 in words is "two billion, one hundred twenty-two million, two hundred two thousand, one hundred twenty-one".