100120220201 has 4 divisors (see below), whose sum is σ = 100120864452. Its totient is φ = 100119575952.

The previous prime is 100120220171. The next prime is 100120220309. The reversal of 100120220201 is 102022021001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 69082237225 + 31037982976 = 262835^2 + 176176^2 .

It is a cyclic number.

It is not a de Polignac number, because 100120220201 - 2¹⁴ = 100120203817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100120220401) 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, 70511 + ... + 453003.

It is an arithmetic number, because the mean of its divisors is an integer number (25030216113).

Almost surely, 2^100120220201 is an apocalyptic number.

It is an amenable number.

100120220201 is a deficient number, since it is larger than the sum of its proper divisors (644251).

100120220201 is an equidigital number, since it uses as much as digits as its factorization.

100120220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644250.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100120220201 its reverse (102022021001), we get a palindrome (202142241202).

The spelling of 100120220201 in words is "one hundred billion, one hundred twenty million, two hundred twenty thousand, two hundred one".