21202122322 has 16 divisors (see below), whose sum is σ = 33931019232. Its totient is φ = 9901303360.

The previous prime is 21202122317. The next prime is 21202122341. The reversal of 21202122322 is 22322120212.

It is a self number, because there is not a number n which added to its sum of digits gives 21202122322.

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, 2375668 + ... + 2384575.

It is an arithmetic number, because the mean of its divisors is an integer number (2120688702).

Almost surely, 2^21202122322 is an apocalyptic number.

21202122322 is a deficient number, since it is larger than the sum of its proper divisors (12728896910).

21202122322 is a wasteful number, since it uses less digits than its factorization.

21202122322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4760393.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21202122322 its reverse (22322120212), we get a palindrome (43524242534).

The spelling of 21202122322 in words is "twenty-one billion, two hundred two million, one hundred twenty-two thousand, three hundred twenty-two".