21333240134 has 4 divisors (see below), whose sum is σ = 31999860204. Its totient is φ = 10666620066.

The previous prime is 21333240127. The next prime is 21333240157. The reversal of 21333240134 is 43104233312.

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

It is a super-2 number, since 2×21333240134² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5333310032 + ... + 5333310035.

It is an arithmetic number, because the mean of its divisors is an integer number (7999965051).

Almost surely, 2^21333240134 is an apocalyptic number.

21333240134 is a deficient number, since it is larger than the sum of its proper divisors (10666620070).

21333240134 is a wasteful number, since it uses less digits than its factorization.

21333240134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10666620069.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 21333240134 its reverse (43104233312), we get a palindrome (64437473446).

The spelling of 21333240134 in words is "twenty-one billion, three hundred thirty-three million, two hundred forty thousand, one hundred thirty-four".