21235411230 has 64 divisors (see below), whose sum is σ = 55634916096. Its totient is φ = 5144576000.

The previous prime is 21235411151. The next prime is 21235411247. The reversal of 21235411230 is 3211453212.

It is a super-2 number, since 2×21235411230² (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 21235411230.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 497950 + ... + 538910.

It is an arithmetic number, because the mean of its divisors is an integer number (869295564).

Almost surely, 2^21235411230 is an apocalyptic number.

21235411230 is an abundant number, since it is smaller than the sum of its proper divisors (34399504866).

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

21235411230 is a wasteful number, since it uses less digits than its factorization.

21235411230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42553.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 21235411230 its reverse (3211453212), we get a palindrome (24446864442).

The spelling of 21235411230 in words is "twenty-one billion, two hundred thirty-five million, four hundred eleven thousand, two hundred thirty".