2521420211 has 4 divisors (see below), whose sum is σ = 2521827552. Its totient is φ = 2521012872.

The previous prime is 2521420207. The next prime is 2521420217. The reversal of 2521420211 is 1120241252.

2521420211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2521420211 - 2² = 2521420207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2521420217) 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, 194240 + ... + 206813.

It is an arithmetic number, because the mean of its divisors is an integer number (630456888).

Almost surely, 2^2521420211 is an apocalyptic number.

2521420211 is a deficient number, since it is larger than the sum of its proper divisors (407341).

2521420211 is an equidigital number, since it uses as much as digits as its factorization.

2521420211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407340.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2521420211 is about 50213.7452397249. The cubic root of 2521420211 is about 1361.0740166222.

Adding to 2521420211 its reverse (1120241252), we get a palindrome (3641661463).

The spelling of 2521420211 in words is "two billion, five hundred twenty-one million, four hundred twenty thousand, two hundred eleven".