2263221310261 has 4 divisors (see below), whose sum is σ = 2315854364032. Its totient is φ = 2210588256492.

The previous prime is 2263221310243. The next prime is 2263221310267. The reversal of 2263221310261 is 1620131223622.

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 2263221310261 - 2⁹ = 2263221309749 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 (2263221310267) 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, 26316526821 + ... + 26316526906.

It is an arithmetic number, because the mean of its divisors is an integer number (578963591008).

Almost surely, 2^{2263221310261} is an apocalyptic number.

It is an amenable number.

2263221310261 is a deficient number, since it is larger than the sum of its proper divisors (52633053771).

2263221310261 is an equidigital number, since it uses as much as digits as its factorization.

2263221310261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52633053770.

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 2263221310261 its reverse (1620131223622), we get a palindrome (3883352533883).

The spelling of 2263221310261 in words is "two trillion, two hundred sixty-three billion, two hundred twenty-one million, three hundred ten thousand, two hundred sixty-one".