100001222100121 has 4 divisors (see below), whose sum is σ = 100004921628544. Its totient is φ = 99997522571700.

The previous prime is 100001222100007. The next prime is 100001222100187. The reversal of 100001222100121 is 121001222100001.

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 100001222100121 - 2²⁵ = 100001188545689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100001220100121) 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, 1849723665 + ... + 1849777726.

It is an arithmetic number, because the mean of its divisors is an integer number (25001230407136).

Almost surely, 2^{100001222100121} is an apocalyptic number.

It is an amenable number.

100001222100121 is a deficient number, since it is larger than the sum of its proper divisors (3699528423).

100001222100121 is an equidigital number, since it uses as much as digits as its factorization.

100001222100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699528422.

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

Adding to 100001222100121 its reverse (121001222100001), we get a palindrome (221002444200122).

The spelling of 100001222100121 in words is "one hundred trillion, one billion, two hundred twenty-two million, one hundred thousand, one hundred twenty-one".