21130110321230 has 32 divisors (see below), whose sum is σ = 38117941606080. Its totient is φ = 8433443715840.

The previous prime is 21130110321211. The next prime is 21130110321247. The reversal of 21130110321230 is 3212301103112.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17972612 + ... + 19112168.

It is an arithmetic number, because the mean of its divisors is an integer number (1191185675190).

Almost surely, 2^{21130110321230} is an apocalyptic number.

21130110321230 is a deficient number, since it is larger than the sum of its proper divisors (16987831284850).

21130110321230 is a wasteful number, since it uses less digits than its factorization.

21130110321230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143644.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21130110321230 its reverse (3212301103112), we get a palindrome (24342411424342).

The spelling of 21130110321230 in words is "twenty-one trillion, one hundred thirty billion, one hundred ten million, three hundred twenty-one thousand, two hundred thirty".