21235433214 has 32 divisors (see below), whose sum is σ = 43179415200. Its totient is φ = 6961328000.

The previous prime is 21235433209. The next prime is 21235433221. The reversal of 21235433214 is 41233453212.

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, 27297 + ... + 207884.

It is an arithmetic number, because the mean of its divisors is an integer number (1349356725).

Almost surely, 2^21235433214 is an apocalyptic number.

21235433214 is an abundant number, since it is smaller than the sum of its proper divisors (21943981986).

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

21235433214 is a wasteful number, since it uses less digits than its factorization.

21235433214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235436.

The product of its digits is 17280, while the sum is 30.

Adding to 21235433214 its reverse (41233453212), we get a palindrome (62468886426).

The spelling of 21235433214 in words is "twenty-one billion, two hundred thirty-five million, four hundred thirty-three thousand, two hundred fourteen".