21001120322 has 32 divisors (see below), whose sum is σ = 38778590592. Its totient is φ = 8306573184.

The previous prime is 21001120291. The next prime is 21001120367. The reversal of 21001120322 is 22302110012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 21001120297 and 21001120306.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1690598 + ... + 1702974.

It is an arithmetic number, because the mean of its divisors is an integer number (1211830956).

Almost surely, 2^21001120322 is an apocalyptic number.

21001120322 is a deficient number, since it is larger than the sum of its proper divisors (17777470270).

21001120322 is a wasteful number, since it uses less digits than its factorization.

21001120322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21722.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21001120322 its reverse (22302110012), we get a palindrome (43303230334).

The spelling of 21001120322 in words is "twenty-one billion, one million, one hundred twenty thousand, three hundred twenty-two".