222111122021011 has 4 divisors (see below), whose sum is σ = 235176482139912. Its totient is φ = 209045761902112.

The previous prime is 222111122020903. The next prime is 222111122021027. The reversal of 222111122021011 is 110120221111222.

It is a happy number.

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 222111122021011 - 2⁹ = 222111122020499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222111122021011.

It is not an unprimeable number, because it can be changed into a prime (222111122028011) 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, 6532680059425 + ... + 6532680059458.

It is an arithmetic number, because the mean of its divisors is an integer number (58794120534978).

Almost surely, 2^{222111122021011} is an apocalyptic number.

222111122021011 is a deficient number, since it is larger than the sum of its proper divisors (13065360118901).

222111122021011 is a wasteful number, since it uses less digits than its factorization.

222111122021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13065360118900.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 222111122021011 its reverse (110120221111222), we get a palindrome (332231343132233).

The spelling of 222111122021011 in words is "two hundred twenty-two trillion, one hundred eleven billion, one hundred twenty-two million, twenty-one thousand, eleven".