2990221121947 has 2 divisors, whose sum is σ = 2990221121948. Its totient is φ = 2990221121946.

The previous prime is 2990221121891. The next prime is 2990221121963. The reversal of 2990221121947 is 7491211220992.

2990221121947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2990221121947 - 2²⁷ = 2990086904219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2990221121947.

It is not a weakly prime, because it can be changed into another prime (2990221121647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1495110560973 + 1495110560974.

It is an arithmetic number, because the mean of its divisors is an integer number (1495110560974).

Almost surely, 2^{2990221121947} is an apocalyptic number.

2990221121947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2990221121947 is an equidigital number, since it uses as much as digits as its factorization.

2990221121947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 2990221121947 in words is "two trillion, nine hundred ninety billion, two hundred twenty-one million, one hundred twenty-one thousand, nine hundred forty-seven".