21303025333353 has 24 divisors (see below), whose sum is σ = 30877694694080. Its totient is φ = 14152863503520.

The previous prime is 21303025333333. The next prime is 21303025333367. The reversal of 21303025333353 is 35333352030312.

21303025333353 is a `hidden beast` number, since 2 + 13 + 0 + 30 + 2 + 533 + 33 + 53 = 666.

It is not a de Polignac number, because 21303025333353 - 2¹⁷ = 21303025202281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21303025333313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 423150 + ... + 6541032.

Almost surely, 2^{21303025333353} is an apocalyptic number.

It is an amenable number.

21303025333353 is a deficient number, since it is larger than the sum of its proper divisors (9574669360727).

21303025333353 is a wasteful number, since it uses less digits than its factorization.

21303025333353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6119229 (or 6119226 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 36.

Adding to 21303025333353 its reverse (35333352030312), we get a palindrome (56636377363665).

The spelling of 21303025333353 in words is "twenty-one trillion, three hundred three billion, twenty-five million, three hundred thirty-three thousand, three hundred fifty-three".