2120002121047 has 2 divisors, whose sum is σ = 2120002121048. Its totient is φ = 2120002121046.

The previous prime is 2120002120997. The next prime is 2120002121089. The reversal of 2120002121047 is 7401212000212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120002121047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120002121147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060001060523 + 1060001060524.

It is an arithmetic number, because the mean of its divisors is an integer number (1060001060524).

Almost surely, 2^{2120002121047} is an apocalyptic number.

2120002121047 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120002121047 is an equidigital number, since it uses as much as digits as its factorization.

2120002121047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 2120002121047 its reverse (7401212000212), we get a palindrome (9521214121259).

The spelling of 2120002121047 in words is "two trillion, one hundred twenty billion, two million, one hundred twenty-one thousand, forty-seven".