2223956261 has 2 divisors, whose sum is σ = 2223956262. Its totient is φ = 2223956260.

The previous prime is 2223956243. The next prime is 2223956311. The reversal of 2223956261 is 1626593222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1376855236 + 847101025 = 37106^2 + 29105^2 .

It is a cyclic number.

It is not a de Polignac number, because 2223956261 - 2²⁶ = 2156847397 is a prime.

It is a super-2 number, since 2×2223956261² = 9891962901682200242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2223956221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111978130 + 1111978131.

It is an arithmetic number, because the mean of its divisors is an integer number (1111978131).

Almost surely, 2^2223956261 is an apocalyptic number.

It is an amenable number.

2223956261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2223956261 is an equidigital number, since it uses as much as digits as its factorization.

2223956261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 38.

The square root of 2223956261 is about 47158.8407512314. The cubic root of 2223956261 is about 1305.2952187560.

The spelling of 2223956261 in words is "two billion, two hundred twenty-three million, nine hundred fifty-six thousand, two hundred sixty-one".