100122121201 has 4 divisors (see below), whose sum is σ = 100126465012. Its totient is φ = 100117777392.

The previous prime is 100122121199. The next prime is 100122121241. The reversal of 100122121201 is 102121221001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102121221001 = 23 ⋅4440053087.

It can be written as a sum of positive squares in 2 ways, for example, as 31969797601 + 68152323600 = 178801^2 + 261060^2 .

It is a cyclic number.

It is not a de Polignac number, because 100122121201 - 2¹ = 100122121199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100122121241) 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, 2137146 + ... + 2183491.

It is an arithmetic number, because the mean of its divisors is an integer number (25031616253).

Almost surely, 2^100122121201 is an apocalyptic number.

It is an amenable number.

100122121201 is a deficient number, since it is larger than the sum of its proper divisors (4343811).

100122121201 is an equidigital number, since it uses as much as digits as its factorization.

100122121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4343810.

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

Adding to 100122121201 its reverse (102121221001), we get a palindrome (202243342202).

The spelling of 100122121201 in words is "one hundred billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred one".