21223230413 has 32 divisors (see below), whose sum is σ = 27870151680. Its totient is φ = 15657408000.

The previous prime is 21223230409. The next prime is 21223230433. The reversal of 21223230413 is 31403232212.

It is a cyclic number.

It is not a de Polignac number, because 21223230413 - 2² = 21223230409 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223230433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3041018 + ... + 3047988.

It is an arithmetic number, because the mean of its divisors is an integer number (870942240).

Almost surely, 2^21223230413 is an apocalyptic number.

It is an amenable number.

21223230413 is a deficient number, since it is larger than the sum of its proper divisors (6646921267).

21223230413 is a wasteful number, since it uses less digits than its factorization.

21223230413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9089.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21223230413 its reverse (31403232212), we get a palindrome (52626462625).

The spelling of 21223230413 in words is "twenty-one billion, two hundred twenty-three million, two hundred thirty thousand, four hundred thirteen".