100121101122201 has 4 divisors (see below), whose sum is σ = 133494801496272. Its totient is φ = 66747400748132.

The previous prime is 100121101122181. The next prime is 100121101122271. The reversal of 100121101122201 is 102221101121001.

It is a happy number.

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 100121101122201 - 2⁹ = 100121101121689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100121101122271) 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, 16686850187031 + ... + 16686850187036.

It is an arithmetic number, because the mean of its divisors is an integer number (33373700374068).

Almost surely, 2^{100121101122201} is an apocalyptic number.

It is an amenable number.

100121101122201 is a deficient number, since it is larger than the sum of its proper divisors (33373700374071).

100121101122201 is an equidigital number, since it uses as much as digits as its factorization.

100121101122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33373700374070.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 100121101122201 its reverse (102221101121001), we get a palindrome (202342202243202).

The spelling of 100121101122201 in words is "one hundred trillion, one hundred twenty-one billion, one hundred one million, one hundred twenty-two thousand, two hundred one".