20134821299 has 4 divisors (see below), whose sum is σ = 21010248336. Its totient is φ = 19259394264.

The previous prime is 20134821229. The next prime is 20134821313. The reversal of 20134821299 is 99212843102.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-20134821299 is a prime.

It is a super-2 number, since 2×20134821299² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20134821229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437713484 + ... + 437713529.

It is an arithmetic number, because the mean of its divisors is an integer number (5252562084).

Almost surely, 2^20134821299 is an apocalyptic number.

20134821299 is a deficient number, since it is larger than the sum of its proper divisors (875427037).

20134821299 is an equidigital number, since it uses as much as digits as its factorization.

20134821299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875427036.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 20134821299 in words is "twenty billion, one hundred thirty-four million, eight hundred twenty-one thousand, two hundred ninety-nine".