2141121947 has 2 divisors, whose sum is σ = 2141121948. Its totient is φ = 2141121946.

The previous prime is 2141121929. The next prime is 2141121971. The reversal of 2141121947 is 7491211412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2141121947 - 2⁸ = 2141121691 is a prime.

It is not a weakly prime, because it can be changed into another prime (7141121947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070560973 + 1070560974.

It is an arithmetic number, because the mean of its divisors is an integer number (1070560974).

Almost surely, 2^2141121947 is an apocalyptic number.

2141121947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141121947 is an equidigital number, since it uses as much as digits as its factorization.

2141121947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 32.

The square root of 2141121947 is about 46272.2589355653. The cubic root of 2141121947 is about 1288.8839067504.

The spelling of 2141121947 in words is "two billion, one hundred forty-one million, one hundred twenty-one thousand, nine hundred forty-seven".