121331002147 has 2 divisors, whose sum is σ = 121331002148. Its totient is φ = 121331002146.

The previous prime is 121331002097. The next prime is 121331002187. The reversal of 121331002147 is 741200133121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121331002147 - 2¹⁵ = 121330969379 is a prime.

It is not a weakly prime, because it can be changed into another prime (121331002187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60665501073 + 60665501074.

It is an arithmetic number, because the mean of its divisors is an integer number (60665501074).

Almost surely, 2^121331002147 is an apocalyptic number.

121331002147 is a deficient number, since it is larger than the sum of its proper divisors (1).

121331002147 is an equidigital number, since it uses as much as digits as its factorization.

121331002147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 121331002147 its reverse (741200133121), we get a palindrome (862531135268).

The spelling of 121331002147 in words is "one hundred twenty-one billion, three hundred thirty-one million, two thousand, one hundred forty-seven".