222122122200111 has 32 divisors (see below), whose sum is σ = 347623016606208. Its totient is φ = 123495288336000.

The previous prime is 222122122200101. The next prime is 222122122200169. The reversal of 222122122200111 is 111002221221222.

It is not a de Polignac number, because 222122122200111 - 2⁵ = 222122122200079 is a prime.

It is a super-2 number, since 2×222122122200111² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222122122200101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83297236 + ... + 85922486.

It is an arithmetic number, because the mean of its divisors is an integer number (10863219268944).

Almost surely, 2^{222122122200111} is an apocalyptic number.

222122122200111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

222122122200111 is a deficient number, since it is larger than the sum of its proper divisors (125500894406097).

222122122200111 is a wasteful number, since it uses less digits than its factorization.

222122122200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2734191.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222122122200111 its reverse (111002221221222), we get a palindrome (333124343421333).

The spelling of 222122122200111 in words is "two hundred twenty-two trillion, one hundred twenty-two billion, one hundred twenty-two million, two hundred thousand, one hundred eleven".