100011212100021 has 8 divisors (see below), whose sum is σ = 136952290443424. Its totient is φ = 64872137578320.

The previous prime is 100011212099971. The next prime is 100011212100031. The reversal of 100011212100021 is 120001212110001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100011212100021 - 2⁷ = 100011212099893 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 (100011212100031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450500955295 + ... + 450500955516.

It is an arithmetic number, because the mean of its divisors is an integer number (17119036305428).

Almost surely, 2^{100011212100021} is an apocalyptic number.

It is an amenable number.

100011212100021 is a deficient number, since it is larger than the sum of its proper divisors (36941078343403).

100011212100021 is an equidigital number, since it uses as much as digits as its factorization.

100011212100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901001910851.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 100011212100021 its reverse (120001212110001), we get a palindrome (220012424210022).

The spelling of 100011212100021 in words is "one hundred trillion, eleven billion, two hundred twelve million, one hundred thousand, twenty-one".