2111322947 has 2 divisors, whose sum is σ = 2111322948. Its totient is φ = 2111322946.

The previous prime is 2111322929. The next prime is 2111323013. The reversal of 2111322947 is 7492231112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2111322947 - 2⁸ = 2111322691 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111322907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055661473 + 1055661474.

It is an arithmetic number, because the mean of its divisors is an integer number (1055661474).

Almost surely, 2^2111322947 is an apocalyptic number.

2111322947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111322947 is an equidigital number, since it uses as much as digits as its factorization.

2111322947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 2111322947 is about 45949.1343444031. The cubic root of 2111322947 is about 1282.8766169199.

The spelling of 2111322947 in words is "two billion, one hundred eleven million, three hundred twenty-two thousand, nine hundred forty-seven".