2521021411 has 4 divisors (see below), whose sum is σ = 2533818672. Its totient is φ = 2508224152.

The previous prime is 2521021361. The next prime is 2521021423. The reversal of 2521021411 is 1141201252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2521021411 - 2¹¹ = 2521019363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2521021471) 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, 6398335 + ... + 6398728.

It is an arithmetic number, because the mean of its divisors is an integer number (633454668).

Almost surely, 2^2521021411 is an apocalyptic number.

2521021411 is a deficient number, since it is larger than the sum of its proper divisors (12797261).

2521021411 is a wasteful number, since it uses less digits than its factorization.

2521021411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12797260.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 2521021411 is about 50209.7740584440. The cubic root of 2521021411 is about 1361.0022548250.

Adding to 2521021411 its reverse (1141201252), we get a palindrome (3662222663).

The spelling of 2521021411 in words is "two billion, five hundred twenty-one million, twenty-one thousand, four hundred eleven".