21011320013222 has 32 divisors (see below), whose sum is σ = 40648859147520. Its totient is φ = 7903944830880.

The previous prime is 21011320013221. The next prime is 21011320013351. The reversal of 21011320013222 is 22231002311012.

It is a junction number, because it is equal to n+sod(n) for n = 21011320013194 and 21011320013203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21011320013221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2352360068 + ... + 2352368999.

It is an arithmetic number, because the mean of its divisors is an integer number (1270276848360).

Almost surely, 2^{21011320013222} is an apocalyptic number.

21011320013222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21011320013222 is a deficient number, since it is larger than the sum of its proper divisors (19637539134298).

21011320013222 is a wasteful number, since it uses less digits than its factorization.

21011320013222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4704729116.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21011320013222 its reverse (22231002311012), we get a palindrome (43242322324234).

The spelling of 21011320013222 in words is "twenty-one trillion, eleven billion, three hundred twenty million, thirteen thousand, two hundred twenty-two".