21003311232230 has 32 divisors (see below), whose sum is σ = 38583560645280. Its totient is φ = 8229537890560.

The previous prime is 21003311232227. The next prime is 21003311232269. The reversal of 21003311232230 is 3223211330012.

It is a super-2 number, since 2×21003311232230² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21003311232196 and 21003311232205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63177329 + ... + 63508908.

It is an arithmetic number, because the mean of its divisors is an integer number (1205736270165).

Almost surely, 2^{21003311232230} is an apocalyptic number.

21003311232230 is a deficient number, since it is larger than the sum of its proper divisors (17580249413050).

21003311232230 is a wasteful number, since it uses less digits than its factorization.

21003311232230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126686584.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21003311232230 its reverse (3223211330012), we get a palindrome (24226522562242).

The spelling of 21003311232230 in words is "twenty-one trillion, three billion, three hundred eleven million, two hundred thirty-two thousand, two hundred thirty".