21211301322 has 12 divisors (see below), whose sum is σ = 45957819570. Its totient is φ = 7070433768.

The previous prime is 21211301317. The next prime is 21211301341. The reversal of 21211301322 is 22310311212.

21211301322 is a `hidden beast` number, since 21 + 21 + 1 + 301 + 322 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21211300881 + 441 = 145641^2 + 21^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1178405629 = 21211301322 / (2 + 1 + 2 + 1 + 1 + 3 + 0 + 1 + 3 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 21211301295 and 21211301304.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 589202797 + ... + 589202832.

Almost surely, 2^21211301322 is an apocalyptic number.

21211301322 is an abundant number, since it is smaller than the sum of its proper divisors (24746518248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21211301322 is a wasteful number, since it uses less digits than its factorization.

21211301322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178405637 (or 1178405634 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21211301322 its reverse (22310311212), we get a palindrome (43521612534).

The spelling of 21211301322 in words is "twenty-one billion, two hundred eleven million, three hundred one thousand, three hundred twenty-two".