200101100121 has 24 divisors (see below), whose sum is σ = 311315449536. Its totient is φ = 123120516960.

The previous prime is 200101100029. The next prime is 200101100179. The reversal of 200101100121 is 121001101002.

It is a happy number.

It is not a de Polignac number, because 200101100121 - 2⁷ = 200101099993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (200101102121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 668626 + ... + 920468.

It is an arithmetic number, because the mean of its divisors is an integer number (12971477064).

Almost surely, 2^200101100121 is an apocalyptic number.

It is an amenable number.

200101100121 is a deficient number, since it is larger than the sum of its proper divisors (111214349415).

200101100121 is a wasteful number, since it uses less digits than its factorization.

200101100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258653 (or 258650 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 200101100121 its reverse (121001101002), we get a palindrome (321102201123).

The spelling of 200101100121 in words is "two hundred billion, one hundred one million, one hundred thousand, one hundred twenty-one".