21434303233 has 8 divisors (see below), whose sum is σ = 24502784768. Its totient is φ = 18367431264.

The previous prime is 21434303213. The next prime is 21434303249. The reversal of 21434303233 is 33230343412.

It is a happy number.

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

It is not a de Polignac number, because 21434303233 - 2¹³ = 21434295041 is a prime.

It is a super-3 number, since 3×21434303233³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21434303213) 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, 373716 + ... + 427237.

It is an arithmetic number, because the mean of its divisors is an integer number (3062848096).

Almost surely, 2^21434303233 is an apocalyptic number.

It is an amenable number.

21434303233 is a deficient number, since it is larger than the sum of its proper divisors (3068481535).

21434303233 is an equidigital number, since it uses as much as digits as its factorization.

21434303233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804783.

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 21434303233 its reverse (33230343412), we get a palindrome (54664646645).

The spelling of 21434303233 in words is "twenty-one billion, four hundred thirty-four million, three hundred three thousand, two hundred thirty-three".