21231411412 has 24 divisors (see below), whose sum is σ = 38782703232. Its totient is φ = 10150932000.

The previous prime is 21231411403. The next prime is 21231411437. The reversal of 21231411412 is 21411413212.

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, 268737 + ... + 338647.

It is an arithmetic number, because the mean of its divisors is an integer number (1615945968).

Almost surely, 2^21231411412 is an apocalyptic number.

It is an amenable number.

21231411412 is a deficient number, since it is larger than the sum of its proper divisors (17551291820).

21231411412 is a wasteful number, since it uses less digits than its factorization.

21231411412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73239 (or 73237 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

Adding to 21231411412 its reverse (21411413212), we get a palindrome (42642824624).

The spelling of 21231411412 in words is "twenty-one billion, two hundred thirty-one million, four hundred eleven thousand, four hundred twelve".