222111211200012 has 24 divisors (see below), whose sum is σ = 575843880889200. Its totient is φ = 74037070399968.

The previous prime is 222111211199987. The next prime is 222111211200037. The reversal of 222111211200012 is 210002112111222.

It is an interprime number because it is at equal distance from previous prime (222111211199987) and next prime (222111211200037).

It is a super-2 number, since 2×222111211200012² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1028292644337 + ... + 1028292644552.

It is an arithmetic number, because the mean of its divisors is an integer number (23993495037050).

Almost surely, 2^{222111211200012} is an apocalyptic number.

It is an amenable number.

222111211200012 is an abundant number, since it is smaller than the sum of its proper divisors (353732669689188).

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

222111211200012 is a wasteful number, since it uses less digits than its factorization.

222111211200012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056585288902 (or 2056585288894 counting only the distinct ones).

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

Adding to 222111211200012 its reverse (210002112111222), we get a palindrome (432113323311234).

The spelling of 222111211200012 in words is "two hundred twenty-two trillion, one hundred eleven billion, two hundred eleven million, two hundred thousand, twelve".