21130231214 has 8 divisors (see below), whose sum is σ = 31697153280. Its totient is φ = 10564513456.

The previous prime is 21130231211. The next prime is 21130231237. The reversal of 21130231214 is 41213203112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130231211) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 255854 + ... + 328209.

It is an arithmetic number, because the mean of its divisors is an integer number (3962144160).

Almost surely, 2^21130231214 is an apocalyptic number.

21130231214 is a deficient number, since it is larger than the sum of its proper divisors (10566922066).

21130231214 is a wasteful number, since it uses less digits than its factorization.

21130231214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602154.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21130231214 its reverse (41213203112), we get a palindrome (62343434326).

The spelling of 21130231214 in words is "twenty-one billion, one hundred thirty million, two hundred thirty-one thousand, two hundred fourteen".