21130049023 has 2 divisors, whose sum is σ = 21130049024. Its totient is φ = 21130049022.

The previous prime is 21130048987. The next prime is 21130049047. The reversal of 21130049023 is 32094003112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21130049023 - 2¹³ = 21130040831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21130049123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10565024511 + 10565024512.

It is an arithmetic number, because the mean of its divisors is an integer number (10565024512).

Almost surely, 2^21130049023 is an apocalyptic number.

21130049023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21130049023 is an equidigital number, since it uses as much as digits as its factorization.

21130049023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 21130049023 in words is "twenty-one billion, one hundred thirty million, forty-nine thousand, twenty-three".