100111121000021 has 8 divisors (see below), whose sum is σ = 100871593929600. Its totient is φ = 99353459431440.

The previous prime is 100111120999957. The next prime is 100111121000041. The reversal of 100111121000021 is 120000121111001.

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

It is a cyclic number.

It is not a de Polignac number, because 100111121000021 - 2⁶ = 100111120999957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100111120999966 and 100111121000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100111121000041) 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, 702768761 + ... + 702911198.

It is an arithmetic number, because the mean of its divisors is an integer number (12608949241200).

Almost surely, 2^{100111121000021} is an apocalyptic number.

It is an amenable number.

100111121000021 is a deficient number, since it is larger than the sum of its proper divisors (760472929579).

100111121000021 is a wasteful number, since it uses less digits than its factorization.

100111121000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405680499.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 100111121000021 its reverse (120000121111001), we get a palindrome (220111242111022).

The spelling of 100111121000021 in words is "one hundred trillion, one hundred eleven billion, one hundred twenty-one million, twenty-one", and thus it is an aban number.