21230224231430 has 16 divisors (see below), whose sum is σ = 38229050809440. Its totient is φ = 8488834760832.

The previous prime is 21230224231417. The next prime is 21230224231457. The reversal of 21230224231430 is 3413242203212.

It is a junction number, because it is equal to n+sod(n) for n = 21230224231393 and 21230224231402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406839074 + ... + 406891253.

It is an arithmetic number, because the mean of its divisors is an integer number (2389315675590).

Almost surely, 2^{21230224231430} is an apocalyptic number.

21230224231430 is a deficient number, since it is larger than the sum of its proper divisors (16998826578010).

21230224231430 is a wasteful number, since it uses less digits than its factorization.

21230224231430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813732943.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 21230224231430 its reverse (3413242203212), we get a palindrome (24643466434642).

The spelling of 21230224231430 in words is "twenty-one trillion, two hundred thirty billion, two hundred twenty-four million, two hundred thirty-one thousand, four hundred thirty".