21001002322 has 16 divisors (see below), whose sum is σ = 31718927232. Its totient is φ = 10428097680.

The previous prime is 21001002313. The next prime is 21001002349. The reversal of 21001002322 is 22320010012.

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, 612247 + ... + 645637.

It is an arithmetic number, because the mean of its divisors is an integer number (1982432952).

Almost surely, 2^21001002322 is an apocalyptic number.

21001002322 is a deficient number, since it is larger than the sum of its proper divisors (10717924910).

21001002322 is a wasteful number, since it uses less digits than its factorization.

21001002322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35553.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21001002322 its reverse (22320010012), we get a palindrome (43321012334).

The spelling of 21001002322 in words is "twenty-one billion, one million, two thousand, three hundred twenty-two".