100001222212012 has 48 divisors (see below), whose sum is σ = 195357588193152. Its totient is φ = 44396559406080.

The previous prime is 100001222211959. The next prime is 100001222212033. The reversal of 100001222212012 is 210212222100001.

It is a happy number.

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, 58311948 + ... + 60002380.

It is an arithmetic number, because the mean of its divisors is an integer number (4069949754024).

Almost surely, 2^{100001222212012} is an apocalyptic number.

It is an amenable number.

100001222212012 is a deficient number, since it is larger than the sum of its proper divisors (95356365981140).

100001222212012 is a wasteful number, since it uses less digits than its factorization.

100001222212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721758 (or 1721756 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 100001222212012 its reverse (210212222100001), we get a palindrome (310213444312013).

The spelling of 100001222212012 in words is "one hundred trillion, one billion, two hundred twenty-two million, two hundred twelve thousand, twelve".