100000222212121 has 32 divisors (see below), whose sum is σ = 127132441952256. Its totient is φ = 76401706680000.

The previous prime is 100000222212103. The next prime is 100000222212167. The reversal of 100000222212121 is 121212222000001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 100000222212121 - 2²⁵ = 100000188657689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100000222212095 and 100000222212104.

It is not an unprimeable number, because it can be changed into a prime (100000222212181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61618665 + ... + 63220726.

It is an arithmetic number, because the mean of its divisors is an integer number (3972888811008).

Almost surely, 2^{100000222212121} is an apocalyptic number.

100000222212121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100000222212121 is a deficient number, since it is larger than the sum of its proper divisors (27132219740135).

100000222212121 is a wasteful number, since it uses less digits than its factorization.

100000222212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124839613.

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

Adding to 100000222212121 its reverse (121212222000001), we get a palindrome (221212444212122).

The spelling of 100000222212121 in words is "one hundred trillion, two hundred twenty-two million, two hundred twelve thousand, one hundred twenty-one".