2223999961 has 2 divisors, whose sum is σ = 2223999962. Its totient is φ = 2223999960.

The previous prime is 2223999949. The next prime is 2224000067. The reversal of 2223999961 is 1699993222.

2223999961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2152496025 + 71503936 = 46395^2 + 8456^2 .

It is a cyclic number.

It is not a de Polignac number, because 2223999961 - 2⁵ = 2223999929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2223999899 and 2223999908.

It is not a weakly prime, because it can be changed into another prime (2223999361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111999980 + 1111999981.

It is an arithmetic number, because the mean of its divisors is an integer number (1111999981).

Almost surely, 2^2223999961 is an apocalyptic number.

It is an amenable number.

2223999961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2223999961 is an equidigital number, since it uses as much as digits as its factorization.

2223999961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 944784, while the sum is 52.

The square root of 2223999961 is about 47159.3040767143. The cubic root of 2223999961 is about 1305.3037682388.

The spelling of 2223999961 in words is "two billion, two hundred twenty-three million, nine hundred ninety-nine thousand, nine hundred sixty-one".