222012021111 has 4 divisors (see below), whose sum is σ = 296016028152. Its totient is φ = 148008014072.

The previous prime is 222012021083. The next prime is 222012021239. The reversal of 222012021111 is 111120210222.

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 222012021111 - 2¹⁸ = 222011758967 is a prime.

It is a super-2 number, since 2×222012021111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222012028111) 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, 37002003516 + ... + 37002003521.

It is an arithmetic number, because the mean of its divisors is an integer number (74004007038).

Almost surely, 2^222012021111 is an apocalyptic number.

222012021111 is a deficient number, since it is larger than the sum of its proper divisors (74004007041).

222012021111 is an equidigital number, since it uses as much as digits as its factorization.

222012021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74004007040.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 222012021111 its reverse (111120210222), we get a palindrome (333132231333).

The spelling of 222012021111 in words is "two hundred twenty-two billion, twelve million, twenty-one thousand, one hundred eleven".