21254234299 has 8 divisors (see below), whose sum is σ = 21990206160. Its totient is φ = 20518466976.

The previous prime is 21254234273. The next prime is 21254234303. The reversal of 21254234299 is 99243245212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21254234299 - 2⁷ = 21254234171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21254234699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177712 + ... + 272194.

It is an arithmetic number, because the mean of its divisors is an integer number (2748775770).

Almost surely, 2^21254234299 is an apocalyptic number.

21254234299 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

21254234299 is a deficient number, since it is larger than the sum of its proper divisors (735971861).

21254234299 is an equidigital number, since it uses as much as digits as its factorization.

21254234299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102269.

The product of its digits is 311040, while the sum is 43.

The spelling of 21254234299 in words is "twenty-one billion, two hundred fifty-four million, two hundred thirty-four thousand, two hundred ninety-nine".