21412222346 has 16 divisors (see below), whose sum is σ = 32202938880. Its totient is φ = 10677947280.

The previous prime is 21412222339. The next prime is 21412222361. The reversal of 21412222346 is 64322221412.

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, 1224815 + ... + 1242173.

It is an arithmetic number, because the mean of its divisors is an integer number (2012683680).

Almost surely, 2^21412222346 is an apocalyptic number.

21412222346 is a deficient number, since it is larger than the sum of its proper divisors (10790716534).

21412222346 is a wasteful number, since it uses less digits than its factorization.

21412222346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18949.

The product of its digits is 9216, while the sum is 29.

Adding to 21412222346 its reverse (64322221412), we get a palindrome (85734443758).

The spelling of 21412222346 in words is "twenty-one billion, four hundred twelve million, two hundred twenty-two thousand, three hundred forty-six".