2011222212211 has 4 divisors (see below), whose sum is σ = 2030018681592. Its totient is φ = 1992425742832.

The previous prime is 2011222212169. The next prime is 2011222212229. The reversal of 2011222212211 is 1122122221102.

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 2011222212211 - 2⁹ = 2011222211699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011222212271) 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, 9398234530 + ... + 9398234743.

It is an arithmetic number, because the mean of its divisors is an integer number (507504670398).

Almost surely, 2^{2011222212211} is an apocalyptic number.

2011222212211 is a deficient number, since it is larger than the sum of its proper divisors (18796469381).

2011222212211 is a wasteful number, since it uses less digits than its factorization.

2011222212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18796469380.

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

Adding to 2011222212211 its reverse (1122122221102), we get a palindrome (3133344433313).

The spelling of 2011222212211 in words is "two trillion, eleven billion, two hundred twenty-two million, two hundred twelve thousand, two hundred eleven".