2002122121247 has 2 divisors, whose sum is σ = 2002122121248. Its totient is φ = 2002122121246.

The previous prime is 2002122121189. The next prime is 2002122121249. The reversal of 2002122121247 is 7421212212002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2002122121247 - 2⁸ = 2002122120991 is a prime.

Together with 2002122121249, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002122121249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001061060623 + 1001061060624.

It is an arithmetic number, because the mean of its divisors is an integer number (1001061060624).

Almost surely, 2^{2002122121247} is an apocalyptic number.

2002122121247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002122121247 is an equidigital number, since it uses as much as digits as its factorization.

2002122121247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 26.

Adding to 2002122121247 its reverse (7421212212002), we get a palindrome (9423334333249).

The spelling of 2002122121247 in words is "two trillion, two billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred forty-seven".