222111110111100 has 288 divisors, whose sum is σ = 818579152581120. Its totient is φ = 45267049635840.

The previous prime is 222111110111039. The next prime is 222111110111161. The reversal of 222111110111100 is 1111011111222.

It is an interprime number because it is at equal distance from previous prime (222111110111039) and next prime (222111110111161).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 222111110111100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 163048009 + ... + 164404608.

It is an arithmetic number, because the mean of its divisors is an integer number (2842288724240).

Almost surely, 2^{222111110111100} is an apocalyptic number.

222111110111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222111110111100 is an abundant number, since it is smaller than the sum of its proper divisors (596468042470020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222111110111100 is a wasteful number, since it uses less digits than its factorization.

222111110111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327452677 (or 327452670 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 222111110111100 its reverse (1111011111222), we get a palindrome (223222121222322).

The spelling of 222111110111100 in words is "two hundred twenty-two trillion, one hundred eleven billion, one hundred ten million, one hundred eleven thousand, one hundred".