222222012212111 has 4 divisors (see below), whose sum is σ = 222480710713800. Its totient is φ = 221963313710424.

The previous prime is 222222012212099. The next prime is 222222012212141. The reversal of 222222012212111 is 111212210222222.

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 222222012212111 - 2¹⁴ = 222222012195727 is a prime.

It is a super-2 number, since 2×222222012212111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222012212141) 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, 129349249556 + ... + 129349251273.

It is an arithmetic number, because the mean of its divisors is an integer number (55620177678450).

Almost surely, 2^{222222012212111} is an apocalyptic number.

222222012212111 is a deficient number, since it is larger than the sum of its proper divisors (258698501689).

222222012212111 is an equidigital number, since it uses as much as digits as its factorization.

222222012212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258698501688.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 222222012212111 its reverse (111212210222222), we get a palindrome (333434222434333).

The spelling of 222222012212111 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, twelve million, two hundred twelve thousand, one hundred eleven".