21321101322 has 24 divisors (see below), whose sum is σ = 47685905280. Its totient is φ = 6877774440.

The previous prime is 21321101317. The next prime is 21321101357. The reversal of 21321101322 is 22310112312.

21321101322 is a `hidden beast` number, since 21 + 321 + 1 + 0 + 1 + 322 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21321101295 and 21321101304.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19104372 + ... + 19105487.

It is an arithmetic number, because the mean of its divisors is an integer number (1986912720).

Almost surely, 2^21321101322 is an apocalyptic number.

21321101322 is an abundant number, since it is smaller than the sum of its proper divisors (26364803958).

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

21321101322 is a wasteful number, since it uses less digits than its factorization.

21321101322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38209898 (or 38209895 counting only the distinct ones).

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

Adding to 21321101322 its reverse (22310112312), we get a palindrome (43631213634).

The spelling of 21321101322 in words is "twenty-one billion, three hundred twenty-one million, one hundred one thousand, three hundred twenty-two".