21223114535 has 16 divisors (see below), whose sum is σ = 29123567616. Its totient is φ = 14544201888.

The previous prime is 21223114531. The next prime is 21223114541. The reversal of 21223114535 is 53541132212.

It is a cyclic number.

It is not a de Polignac number, because 21223114535 - 2² = 21223114531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21223114498 and 21223114507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223114531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124109 + ... + 240518.

It is an arithmetic number, because the mean of its divisors is an integer number (1820222976).

Almost surely, 2^21223114535 is an apocalyptic number.

21223114535 is a deficient number, since it is larger than the sum of its proper divisors (7900453081).

21223114535 is a wasteful number, since it uses less digits than its factorization.

21223114535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366302.

The product of its digits is 7200, while the sum is 29.

Adding to 21223114535 its reverse (53541132212), we get a palindrome (74764246747).

The spelling of 21223114535 in words is "twenty-one billion, two hundred twenty-three million, one hundred fourteen thousand, five hundred thirty-five".