2120503521 has 8 divisors (see below), whose sum is σ = 2827581664. Its totient is φ = 1413547200.

The previous prime is 2120503501. The next prime is 2120503523. The reversal of 2120503521 is 1253050212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2120503521 - 2⁷ = 2120503393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120503523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24150 + ... + 69456.

It is an arithmetic number, because the mean of its divisors is an integer number (353447708).

Almost surely, 2^2120503521 is an apocalyptic number.

It is an amenable number.

2120503521 is a deficient number, since it is larger than the sum of its proper divisors (707078143).

2120503521 is a wasteful number, since it uses less digits than its factorization.

2120503521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60911.

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

The square root of 2120503521 is about 46048.9252969057. The cubic root of 2120503521 is about 1284.7333539096.

Adding to 2120503521 its reverse (1253050212), we get a palindrome (3373553733).

The spelling of 2120503521 in words is "two billion, one hundred twenty million, five hundred three thousand, five hundred twenty-one".