21233143086 has 16 divisors (see below), whose sum is σ = 42469228368. Its totient is φ = 7077224000.

The previous prime is 21233143051. The next prime is 21233143103. The reversal of 21233143086 is 68034133212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22485 + ... + 207296.

It is an arithmetic number, because the mean of its divisors is an integer number (2654326773).

Almost surely, 2^21233143086 is an apocalyptic number.

21233143086 is an abundant number, since it is smaller than the sum of its proper divisors (21236085282).

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

21233143086 is a wasteful number, since it uses less digits than its factorization.

21233143086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245187.

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 21233143086 its reverse (68034133212), we get a palindrome (89267276298).

The spelling of 21233143086 in words is "twenty-one billion, two hundred thirty-three million, one hundred forty-three thousand, eighty-six".