22122202121211 has 4 divisors (see below), whose sum is σ = 29496269494952. Its totient is φ = 14748134747472.

The previous prime is 22122202121207. The next prime is 22122202121231. The reversal of 22122202121211 is 11212120222122.

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

It is not a de Polignac number, because 22122202121211 - 2² = 22122202121207 is a prime.

It is a super-2 number, since 2×22122202121211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22122202121231) 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, 3687033686866 + ... + 3687033686871.

It is an arithmetic number, because the mean of its divisors is an integer number (7374067373738).

Almost surely, 2^{22122202121211} is an apocalyptic number.

22122202121211 is a deficient number, since it is larger than the sum of its proper divisors (7374067373741).

22122202121211 is an equidigital number, since it uses as much as digits as its factorization.

22122202121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7374067373740.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22122202121211 its reverse (11212120222122), we get a palindrome (33334322343333).

The spelling of 22122202121211 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred two million, one hundred twenty-one thousand, two hundred eleven".