2123520501 has 4 divisors (see below), whose sum is σ = 2831360672. Its totient is φ = 1415680332.

The previous prime is 2123520467. The next prime is 2123520533. The reversal of 2123520501 is 1050253212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2123520501 - 2⁶ = 2123520437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123528501) 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, 353920081 + ... + 353920086.

It is an arithmetic number, because the mean of its divisors is an integer number (707840168).

Almost surely, 2^2123520501 is an apocalyptic number.

It is an amenable number.

2123520501 is a deficient number, since it is larger than the sum of its proper divisors (707840171).

2123520501 is an equidigital number, since it uses as much as digits as its factorization.

2123520501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707840170.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2123520501 is about 46081.6720725279. The cubic root of 2123520501 is about 1285.3423567599.

Adding to 2123520501 its reverse (1050253212), we get a palindrome (3173773713).

The spelling of 2123520501 in words is "two billion, one hundred twenty-three million, five hundred twenty thousand, five hundred one".