2221241523 has 4 divisors (see below), whose sum is σ = 2961655368. Its totient is φ = 1480827680.

The previous prime is 2221241467. The next prime is 2221241527. The reversal of 2221241523 is 3251421222.

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 2221241523 - 2²⁸ = 1952806067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2221241493 and 2221241502.

It is not an unprimeable number, because it can be changed into a prime (2221241527) 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, 370206918 + ... + 370206923.

It is an arithmetic number, because the mean of its divisors is an integer number (740413842).

Almost surely, 2^2221241523 is an apocalyptic number.

2221241523 is a deficient number, since it is larger than the sum of its proper divisors (740413845).

2221241523 is an equidigital number, since it uses as much as digits as its factorization.

2221241523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740413844.

The product of its digits is 1920, while the sum is 24.

The square root of 2221241523 is about 47130.0490451686. The cubic root of 2221241523 is about 1304.7638867611.

Adding to 2221241523 its reverse (3251421222), we get a palindrome (5472662745).

The spelling of 2221241523 in words is "two billion, two hundred twenty-one million, two hundred forty-one thousand, five hundred twenty-three".