100000121212223 has 4 divisors (see below), whose sum is σ = 100000141253568. Its totient is φ = 100000101170880.

The previous prime is 100000121212183. The next prime is 100000121212261. The reversal of 100000121212223 is 322212121000001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100000121212223 - 2⁸ = 100000121211967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100000121212273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4045490 + ... + 14709392.

It is an arithmetic number, because the mean of its divisors is an integer number (25000035313392).

Almost surely, 2^{100000121212223} is an apocalyptic number.

100000121212223 is a deficient number, since it is larger than the sum of its proper divisors (20041345).

100000121212223 is an equidigital number, since it uses as much as digits as its factorization.

100000121212223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20041344.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 100000121212223 its reverse (322212121000001), we get a palindrome (422212242212224).

The spelling of 100000121212223 in words is "one hundred trillion, one hundred twenty-one million, two hundred twelve thousand, two hundred twenty-three".