2123132401 has 4 divisors (see below), whose sum is σ = 2286450292. Its totient is φ = 1959814512.

The previous prime is 2123132399. The next prime is 2123132443. The reversal of 2123132401 is 1042313212.

It is a happy number.

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 496220176 + 1626912225 = 22276^2 + 40335^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123132401 - 2¹ = 2123132399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123132471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81658926 + ... + 81658951.

It is an arithmetic number, because the mean of its divisors is an integer number (571612573).

Almost surely, 2^2123132401 is an apocalyptic number.

It is an amenable number.

2123132401 is a deficient number, since it is larger than the sum of its proper divisors (163317891).

2123132401 is a wasteful number, since it uses less digits than its factorization.

2123132401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163317890.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2123132401 is about 46077.4608783948. The cubic root of 2123132401 is about 1285.2640478445.

Adding to 2123132401 its reverse (1042313212), we get a palindrome (3165445613).

The spelling of 2123132401 in words is "two billion, one hundred twenty-three million, one hundred thirty-two thousand, four hundred one".