100101222121 has 4 divisors (see below), whose sum is σ = 100142537472. Its totient is φ = 100059906772.

The previous prime is 100101222079. The next prime is 100101222209. The reversal of 100101222121 is 121222101001.

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 100101222121 - 2³¹ = 97953738473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100101222521) 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, 20654041 + ... + 20658886.

It is an arithmetic number, because the mean of its divisors is an integer number (25035634368).

Almost surely, 2^100101222121 is an apocalyptic number.

It is an amenable number.

100101222121 is a deficient number, since it is larger than the sum of its proper divisors (41315351).

100101222121 is an equidigital number, since it uses as much as digits as its factorization.

100101222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41315350.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100101222121 its reverse (121222101001), we get a palindrome (221323323122).

The spelling of 100101222121 in words is "one hundred billion, one hundred one million, two hundred twenty-two thousand, one hundred twenty-one".