100111212122101 has 4 divisors (see below), whose sum is σ = 100614283540000. Its totient is φ = 99608140704204.

The previous prime is 100111212122069. The next prime is 100111212122149. The reversal of 100111212122101 is 101221212111001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100111212122101 - 2⁵ = 100111212122069 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 (100111212122501) 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, 251535708651 + ... + 251535709048.

It is an arithmetic number, because the mean of its divisors is an integer number (25153570885000).

Almost surely, 2^{100111212122101} is an apocalyptic number.

It is an amenable number.

100111212122101 is a deficient number, since it is larger than the sum of its proper divisors (503071417899).

100111212122101 is an equidigital number, since it uses as much as digits as its factorization.

100111212122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503071417898.

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

Adding to 100111212122101 its reverse (101221212111001), we get a palindrome (201332424233102).

It can be divided in two parts, 100111 and 212122101, that added together give a palindrome (212222212).

The spelling of 100111212122101 in words is "one hundred trillion, one hundred eleven billion, two hundred twelve million, one hundred twenty-two thousand, one hundred one".