21431140222 has 16 divisors (see below), whose sum is σ = 33019831872. Its totient is φ = 10424604960.

The previous prime is 21431140189. The next prime is 21431140301. The reversal of 21431140222 is 22204113412.

It is a junction number, because it is equal to n+sod(n) for n = 21431140193 and 21431140202.

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, 784363 + ... + 811225.

It is an arithmetic number, because the mean of its divisors is an integer number (2063739492).

Almost surely, 2^21431140222 is an apocalyptic number.

21431140222 is a deficient number, since it is larger than the sum of its proper divisors (11588691650).

21431140222 is a wasteful number, since it uses less digits than its factorization.

21431140222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37683.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21431140222 its reverse (22204113412), we get a palindrome (43635253634).

The spelling of 21431140222 in words is "twenty-one billion, four hundred thirty-one million, one hundred forty thousand, two hundred twenty-two".