222100220121111 has 24 divisors (see below), whose sum is σ = 321578483597280. Its totient is φ = 147712843869696.

The previous prime is 222100220121071. The next prime is 222100220121121. The reversal of 222100220121111 is 111121022001222.

222100220121111 is a `hidden beast` number, since 2 + 2 + 210 + 0 + 220 + 121 + 111 = 666.

It is not a de Polignac number, because 222100220121111 - 2⁴² = 217702173610007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222100220121121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45734790 + ... + 50357436.

It is an arithmetic number, because the mean of its divisors is an integer number (13399103483220).

Almost surely, 2^{222100220121111} is an apocalyptic number.

222100220121111 is a deficient number, since it is larger than the sum of its proper divisors (99478263476169).

222100220121111 is a wasteful number, since it uses less digits than its factorization.

222100220121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4635415 (or 4635412 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 222100220121111 its reverse (111121022001222), we get a palindrome (333221242122333).

The spelling of 222100220121111 in words is "two hundred twenty-two trillion, one hundred billion, two hundred twenty million, one hundred twenty-one thousand, one hundred eleven".