100312122222 has 40 divisors (see below), whose sum is σ = 242063730216. Its totient is φ = 30865267728.

The previous prime is 100312122167. The next prime is 100312122269. The reversal of 100312122222 is 222221213001.

100312122222 is a `hidden beast` number, since 10 + 0 + 312 + 122 + 222 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 100312122195 and 100312122204.

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 23813688 + ... + 23817899.

Almost surely, 2^100312122222 is an apocalyptic number.

100312122222 is an abundant number, since it is smaller than the sum of its proper divisors (141751607994).

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

100312122222 is a wasteful number, since it uses less digits than its factorization.

100312122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47631614 (or 47631605 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 100312122222 its reverse (222221213001), we get a palindrome (322533335223).

The spelling of 100312122222 in words is "one hundred billion, three hundred twelve million, one hundred twenty-two thousand, two hundred twenty-two".