2122202121211 has 4 divisors (see below), whose sum is σ = 2134909918512. Its totient is φ = 2109494323912.

The previous prime is 2122202121173. The next prime is 2122202121257. The reversal of 2122202121211 is 1121212022212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122202121211 is a prime.

It is a super-2 number, since 2×2122202121211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122202121311) 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, 6353898400 + ... + 6353898733.

It is an arithmetic number, because the mean of its divisors is an integer number (533727479628).

Almost surely, 2^{2122202121211} is an apocalyptic number.

2122202121211 is a deficient number, since it is larger than the sum of its proper divisors (12707797301).

2122202121211 is a wasteful number, since it uses less digits than its factorization.

2122202121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12707797300.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2122202121211 its reverse (1121212022212), we get a palindrome (3243414143423).

The spelling of 2122202121211 in words is "two trillion, one hundred twenty-two billion, two hundred two million, one hundred twenty-one thousand, two hundred eleven".