21133314740 has 24 divisors (see below), whose sum is σ = 44819370792. Its totient is φ = 8369628800.

The previous prime is 21133314721. The next prime is 21133314743. The reversal of 21133314740 is 4741333112.

It can be written as a sum of positive squares in 4 ways, for example, as 4938716176 + 16194598564 = 70276^2 + 127258^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21133314743) 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, 5228999 + ... + 5233038.

It is an arithmetic number, because the mean of its divisors is an integer number (1867473783).

Almost surely, 2^21133314740 is an apocalyptic number.

21133314740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21133314740 is an abundant number, since it is smaller than the sum of its proper divisors (23686056052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21133314740 is a wasteful number, since it uses less digits than its factorization.

21133314740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10462147 (or 10462145 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

Adding to 21133314740 its reverse (4741333112), we get a palindrome (25874647852).

The spelling of 21133314740 in words is "twenty-one billion, one hundred thirty-three million, three hundred fourteen thousand, seven hundred forty".