21010233333336 has 32 divisors (see below), whose sum is σ = 56566012821360. Its totient is φ = 6464687179392.

The previous prime is 21010233333307. The next prime is 21010233333337. The reversal of 21010233333336 is 63333333201012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21010233333297 and 21010233333306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010233333337) 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, 33670245415 + ... + 33670246038.

Almost surely, 2^{21010233333336} is an apocalyptic number.

21010233333336 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21010233333336 is an abundant number, since it is smaller than the sum of its proper divisors (35555779488024).

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

21010233333336 is a wasteful number, since it uses less digits than its factorization.

21010233333336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67340491475 (or 67340491471 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 33.

Adding to 21010233333336 its reverse (63333333201012), we get a palindrome (84343566534348).

The spelling of 21010233333336 in words is "twenty-one trillion, ten billion, two hundred thirty-three million, three hundred thirty-three thousand, three hundred thirty-six".