2221350261 has 16 divisors (see below), whose sum is σ = 3202879680. Its totient is φ = 1361306880.

The previous prime is 2221350239. The next prime is 2221350283. The reversal of 2221350261 is 1620531222.

2221350261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2221350239) and next prime (2221350283).

It is a de Polignac number, because none of the positive numbers 2^k-2221350261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221350161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108771 + ... + 127568.

It is an arithmetic number, because the mean of its divisors is an integer number (200179980).

Almost surely, 2^2221350261 is an apocalyptic number.

It is an amenable number.

2221350261 is a deficient number, since it is larger than the sum of its proper divisors (981529419).

2221350261 is a wasteful number, since it uses less digits than its factorization.

2221350261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236596.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2221350261 is about 47131.2026262857. The cubic root of 2221350261 is about 1304.7851774221.

Adding to 2221350261 its reverse (1620531222), we get a palindrome (3841881483).

The spelling of 2221350261 in words is "two billion, two hundred twenty-one million, three hundred fifty thousand, two hundred sixty-one".