21333333045 has 16 divisors (see below), whose sum is σ = 34150628160. Its totient is φ = 11372012544.

The previous prime is 21333333029. The next prime is 21333333059. The reversal of 21333333045 is 54033333312.

It is a happy number.

It is not a de Polignac number, because 21333333045 - 2⁴ = 21333333029 is a prime.

It is a super-2 number, since 2×21333333045² (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 in 15 ways as a sum of consecutive naturals, for example, 329644 + ... + 389013.

It is an arithmetic number, because the mean of its divisors is an integer number (2134414260).

Almost surely, 2^21333333045 is an apocalyptic number.

It is an amenable number.

21333333045 is a deficient number, since it is larger than the sum of its proper divisors (12817295115).

21333333045 is a wasteful number, since it uses less digits than its factorization.

21333333045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720644.

The product of its (nonzero) digits is 29160, while the sum is 30.

Adding to 21333333045 its reverse (54033333312), we get a palindrome (75366666357).

The spelling of 21333333045 in words is "twenty-one billion, three hundred thirty-three million, three hundred thirty-three thousand, forty-five".