21011101220322 has 40 divisors (see below), whose sum is σ = 49127405760576. Its totient is φ = 6699191692248.

The previous prime is 21011101220309. The next prime is 21011101220371. The reversal of 21011101220322 is 22302210111012.

21011101220322 is a `hidden beast` number, since 2 + 10 + 1 + 110 + 1 + 220 + 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 = 21011101220295 and 21011101220304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2819521398 + ... + 2819528849.

Almost surely, 2^{21011101220322} is an apocalyptic number.

21011101220322 is an abundant number, since it is smaller than the sum of its proper divisors (28116304540254).

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

21011101220322 is a wasteful number, since it uses less digits than its factorization.

21011101220322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5639050284 (or 5639050275 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21011101220322 its reverse (22302210111012), we get a palindrome (43313311331334).

The spelling of 21011101220322 in words is "twenty-one trillion, eleven billion, one hundred one million, two hundred twenty thousand, three hundred twenty-two".