222100221111 has 16 divisors (see below), whose sum is σ = 298270758240. Its totient is φ = 147000694400.

The previous prime is 222100221053. The next prime is 222100221151. The reversal of 222100221111 is 111122001222.

It is a cyclic number.

It is not a de Polignac number, because 222100221111 - 2⁶ = 222100221047 is a prime.

It is a super-4 number, since 4×222100221111⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222100221151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58585 + ... + 669053.

It is an arithmetic number, because the mean of its divisors is an integer number (18641922390).

Almost surely, 2^222100221111 is an apocalyptic number.

222100221111 is a deficient number, since it is larger than the sum of its proper divisors (76170537129).

222100221111 is a wasteful number, since it uses less digits than its factorization.

222100221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611346.

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

Adding to 222100221111 its reverse (111122001222), we get a palindrome (333222222333).

It can be divided in two parts, 222100 and 221111, that added together give a triangular number (443211 = T₉₄₁).

The spelling of 222100221111 in words is "two hundred twenty-two billion, one hundred million, two hundred twenty-one thousand, one hundred eleven".