100001222222212 has 48 divisors (see below), whose sum is σ = 181966935870720. Its totient is φ = 48051192426752.

The previous prime is 100001222222201. The next prime is 100001222222249. The reversal of 100001222222212 is 212222222100001.

It is a self number, because there is not a number n which added to its sum of digits gives 100001222222212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4245858 + ... + 14765830.

It is an arithmetic number, because the mean of its divisors is an integer number (3790977830640).

Almost surely, 2^{100001222222212} is an apocalyptic number.

It is an amenable number.

100001222222212 is a deficient number, since it is larger than the sum of its proper divisors (81965713648508).

100001222222212 is a wasteful number, since it uses less digits than its factorization.

100001222222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10520940 (or 10520938 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 100001222222212 its reverse (212222222100001), we get a palindrome (312223444322213).

The spelling of 100001222222212 in words is "one hundred trillion, one billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twelve".