2209322403881 has 2 divisors, whose sum is σ = 2209322403882. Its totient is φ = 2209322403880.

The previous prime is 2209322403833. The next prime is 2209322403887. The reversal of 2209322403881 is 1883042239022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1635114608656 + 574207795225 = 1278716^2 + 757765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2209322403881 is a prime.

It is a super-2 number, since 2×2209322403881² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2209322403887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1104661201940 + 1104661201941.

It is an arithmetic number, because the mean of its divisors is an integer number (1104661201941).

Almost surely, 2^{2209322403881} is an apocalyptic number.

It is an amenable number.

2209322403881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2209322403881 is an equidigital number, since it uses as much as digits as its factorization.

2209322403881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 2209322403881 in words is "two trillion, two hundred nine billion, three hundred twenty-two million, four hundred three thousand, eight hundred eighty-one".