2421219187129 has 2 divisors, whose sum is σ = 2421219187130. Its totient is φ = 2421219187128.

The previous prime is 2421219187111. The next prime is 2421219187159. The reversal of 2421219187129 is 9217819121242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1860932505600 + 560286681529 = 1364160^2 + 748523^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2421219187129 is a prime.

It is not a weakly prime, because it can be changed into another prime (2421219187159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210609593564 + 1210609593565.

It is an arithmetic number, because the mean of its divisors is an integer number (1210609593565).

Almost surely, 2^{2421219187129} is an apocalyptic number.

It is an amenable number.

2421219187129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421219187129 is an equidigital number, since it uses as much as digits as its factorization.

2421219187129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 49.

The spelling of 2421219187129 in words is "two trillion, four hundred twenty-one billion, two hundred nineteen million, one hundred eighty-seven thousand, one hundred twenty-nine".