222112100120004 has 72 divisors (see below), whose sum is σ = 579598659843840. Its totient is φ = 71644448635200.

The previous prime is 222112100120003. The next prime is 222112100120069. The reversal of 222112100120004 is 400021001211222.

It is a super-2 number, since 2×222112100120004² (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 not an unprimeable number, because it can be changed into a prime (222112100120003) 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, 10940527 + ... + 23746985.

It is an arithmetic number, because the mean of its divisors is an integer number (8049981386720).

Almost surely, 2^{222112100120004} is an apocalyptic number.

It is an amenable number.

222112100120004 is an abundant number, since it is smaller than the sum of its proper divisors (357486559723836).

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

222112100120004 is a wasteful number, since it uses less digits than its factorization.

222112100120004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12822041 (or 12822036 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222112100120004 its reverse (400021001211222), we get a palindrome (622133101331226).

The spelling of 222112100120004 in words is "two hundred twenty-two trillion, one hundred twelve billion, one hundred million, one hundred twenty thousand, four".