21433100312 has 16 divisors (see below), whose sum is σ = 43278375840. Its totient is φ = 9892200096.

The previous prime is 21433100281. The next prime is 21433100399. The reversal of 21433100312 is 21300133412.

It is a super-3 number, since 3×21433100312³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103043648 + ... + 103043855.

It is an arithmetic number, because the mean of its divisors is an integer number (2704898490).

Almost surely, 2^21433100312 is an apocalyptic number.

It is an amenable number.

21433100312 is an abundant number, since it is smaller than the sum of its proper divisors (21845275528).

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

21433100312 is a wasteful number, since it uses less digits than its factorization.

21433100312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206087522 (or 206087518 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21433100312 its reverse (21300133412), we get a palindrome (42733233724).

It can be divided in two parts, 21433100 and 312, that added together give a palindrome (21433412).

The spelling of 21433100312 in words is "twenty-one billion, four hundred thirty-three million, one hundred thousand, three hundred twelve".