21415435222 has 16 divisors (see below), whose sum is σ = 32365800720. Its totient is φ = 10626995808.

The previous prime is 21415435201. The next prime is 21415435243. The reversal of 21415435222 is 22253451412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21415435201) and next prime (21415435243).

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, 230028 + ... + 309424.

It is an arithmetic number, because the mean of its divisors is an integer number (2022862545).

Almost surely, 2^21415435222 is an apocalyptic number.

21415435222 is a deficient number, since it is larger than the sum of its proper divisors (10950365498).

21415435222 is a wasteful number, since it uses less digits than its factorization.

21415435222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80415.

The product of its digits is 19200, while the sum is 31.

Adding to 21415435222 its reverse (22253451412), we get a palindrome (43668886634).

The spelling of 21415435222 in words is "twenty-one billion, four hundred fifteen million, four hundred thirty-five thousand, two hundred twenty-two".