2102131201 has 4 divisors (see below), whose sum is σ = 2102604804. Its totient is φ = 2101657600.

The previous prime is 2102131181. The next prime is 2102131211. The reversal of 2102131201 is 1021312012.

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 1648441201 + 453690000 = 40601^2 + 21300^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102131201 - 2⁵ = 2102131169 is a prime.

It is a super-3 number, since 3×2102131201³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102131211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230080 + ... + 239041.

It is an arithmetic number, because the mean of its divisors is an integer number (525651201).

Almost surely, 2^2102131201 is an apocalyptic number.

It is an amenable number.

2102131201 is a deficient number, since it is larger than the sum of its proper divisors (473603).

2102131201 is an equidigital number, since it uses as much as digits as its factorization.

2102131201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473602.

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

The square root of 2102131201 is about 45849.0043621451. The cubic root of 2102131201 is about 1281.0122203648.

Adding to 2102131201 its reverse (1021312012), we get a palindrome (3123443213).

It can be divided in two parts, 2 and 102131201, that multiplied together give a palindrome (204262402).

The spelling of 2102131201 in words is "two billion, one hundred two million, one hundred thirty-one thousand, two hundred one".