202112130001 has 4 divisors (see below), whose sum is σ = 204383052900. Its totient is φ = 199841207104.

The previous prime is 202112129987. The next prime is 202112130019. The reversal of 202112130001 is 100031211202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26235900625 + 175876229376 = 161975^2 + 419376^2 .

It is a cyclic number.

It is not a de Polignac number, because 202112130001 - 2⁹ = 202112129489 is a prime.

It is a super-2 number, since 2×202112130001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202112130041) 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, 1135461316 + ... + 1135461493.

It is an arithmetic number, because the mean of its divisors is an integer number (51095763225).

Almost surely, 2^202112130001 is an apocalyptic number.

It is an amenable number.

202112130001 is a deficient number, since it is larger than the sum of its proper divisors (2270922899).

202112130001 is an equidigital number, since it uses as much as digits as its factorization.

202112130001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2270922898.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 202112130001 its reverse (100031211202), we get a palindrome (302143341203).

The spelling of 202112130001 in words is "two hundred two billion, one hundred twelve million, one hundred thirty thousand, one".