21134303445 has 32 divisors (see below), whose sum is σ = 34018358400. Its totient is φ = 11203974144.

The previous prime is 21134303441. The next prime is 21134303483. The reversal of 21134303445 is 54430343112.

It is not a de Polignac number, because 21134303445 - 2² = 21134303441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21134303441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2158521 + ... + 2168289.

It is an arithmetic number, because the mean of its divisors is an integer number (1063073700).

Almost surely, 2^21134303445 is an apocalyptic number.

It is an amenable number.

21134303445 is a deficient number, since it is larger than the sum of its proper divisors (12884054955).

21134303445 is a wasteful number, since it uses less digits than its factorization.

21134303445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10629.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 21134303445 its reverse (54430343112), we get a palindrome (75564646557).

The spelling of 21134303445 in words is "twenty-one billion, one hundred thirty-four million, three hundred three thousand, four hundred forty-five".