22012122211211 has 4 divisors (see below), whose sum is σ = 24013224230424. Its totient is φ = 20011020192000.

The previous prime is 22012122211207. The next prime is 22012122211241. The reversal of 22012122211211 is 11211222121022.

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

It is a cyclic number.

It is not a de Polignac number, because 22012122211211 - 2² = 22012122211207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22012122211241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000551009590 + ... + 1000551009611.

It is an arithmetic number, because the mean of its divisors is an integer number (6003306057606).

Almost surely, 2^{22012122211211} is an apocalyptic number.

22012122211211 is a deficient number, since it is larger than the sum of its proper divisors (2001102019213).

22012122211211 is a wasteful number, since it uses less digits than its factorization.

22012122211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001102019212.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22012122211211 its reverse (11211222121022), we get a palindrome (33223344332233).

The spelling of 22012122211211 in words is "twenty-two trillion, twelve billion, one hundred twenty-two million, two hundred eleven thousand, two hundred eleven".