21263242032230 has 64 divisors (see below), whose sum is σ = 43582940352000. Its totient is φ = 7393481905920.

The previous prime is 21263242032211. The next prime is 21263242032233. The reversal of 21263242032230 is 3223024236212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21263242032233) 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, 6335741 + ... + 9092199.

It is an arithmetic number, because the mean of its divisors is an integer number (680983443000).

Almost surely, 2^{21263242032230} is an apocalyptic number.

21263242032230 is an abundant number, since it is smaller than the sum of its proper divisors (22319698319770).

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

21263242032230 is a wasteful number, since it uses less digits than its factorization.

21263242032230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759549.

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 21263242032230 its reverse (3223024236212), we get a palindrome (24486266268442).

The spelling of 21263242032230 in words is "twenty-one trillion, two hundred sixty-three billion, two hundred forty-two million, thirty-two thousand, two hundred thirty".