21220010230 has 64 divisors (see below), whose sum is σ = 40356569088. Its totient is φ = 8023155840.

The previous prime is 21220010177. The next prime is 21220010233. The reversal of 21220010230 is 3201002212.

It is a super-2 number, since 2×21220010230² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21220010230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220010233) 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, 3035319 + ... + 3042301.

It is an arithmetic number, because the mean of its divisors is an integer number (630571392).

Almost surely, 2^21220010230 is an apocalyptic number.

21220010230 is a deficient number, since it is larger than the sum of its proper divisors (19136558858).

21220010230 is a wasteful number, since it uses less digits than its factorization.

21220010230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7261.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21220010230 its reverse (3201002212), we get a palindrome (24421012442).

The spelling of 21220010230 in words is "twenty-one billion, two hundred twenty million, ten thousand, two hundred thirty".