2121634410263 has 2 divisors, whose sum is σ = 2121634410264. Its totient is φ = 2121634410262.

The previous prime is 2121634410241. The next prime is 2121634410271. The reversal of 2121634410263 is 3620144361212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121634410263 - 2²² = 2121630215959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121634412263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060817205131 + 1060817205132.

It is an arithmetic number, because the mean of its divisors is an integer number (1060817205132).

Almost surely, 2^{2121634410263} is an apocalyptic number.

2121634410263 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121634410263 is an equidigital number, since it uses as much as digits as its factorization.

2121634410263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 35.

Adding to 2121634410263 its reverse (3620144361212), we get a palindrome (5741778771475).

The spelling of 2121634410263 in words is "two trillion, one hundred twenty-one billion, six hundred thirty-four million, four hundred ten thousand, two hundred sixty-three".