100121121210201 has 16 divisors (see below), whose sum is σ = 164301327114624. Its totient is φ = 52811140857984.

The previous prime is 100121121210169. The next prime is 100121121210203. The reversal of 100121121210201 is 102012121121001.

It is a happy number.

It is not a de Polignac number, because 100121121210201 - 2⁵ = 100121121210169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100121121210203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183372016596 + ... + 183372017141.

It is an arithmetic number, because the mean of its divisors is an integer number (10268832944664).

Almost surely, 2^{100121121210201} is an apocalyptic number.

It is an amenable number.

100121121210201 is a deficient number, since it is larger than the sum of its proper divisors (64180205904423).

100121121210201 is a wasteful number, since it uses less digits than its factorization.

100121121210201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366744033760.

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

Adding to 100121121210201 its reverse (102012121121001), we get a palindrome (202133242331202).

The spelling of 100121121210201 in words is "one hundred trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred ten thousand, two hundred one".