2011325621 has 4 divisors (see below), whose sum is σ = 2011446144. Its totient is φ = 2011205100.

The previous prime is 2011325609. The next prime is 2011325627. The reversal of 2011325621 is 1265231102.

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 a cyclic number.

It is not a de Polignac number, because 2011325621 - 2¹⁰ = 2011324597 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 (2011325627) 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, 30245 + ... + 70266.

It is an arithmetic number, because the mean of its divisors is an integer number (502861536).

Almost surely, 2^2011325621 is an apocalyptic number.

It is an amenable number.

2011325621 is a deficient number, since it is larger than the sum of its proper divisors (120523).

2011325621 is a wasteful number, since it uses less digits than its factorization.

2011325621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120522.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2011325621 is about 44847.8050856449. The cubic root of 2011325621 is about 1262.2948061903.

Adding to 2011325621 its reverse (1265231102), we get a palindrome (3276556723).

The spelling of 2011325621 in words is "two billion, eleven million, three hundred twenty-five thousand, six hundred twenty-one".