21213221012322 has 16 divisors (see below), whose sum is σ = 44659412657760. Its totient is φ = 6698911898592.

The previous prime is 21213221012297. The next prime is 21213221012323. The reversal of 21213221012322 is 22321012231212.

It is a junction number, because it is equal to n+sod(n) for n = 21213221012292 and 21213221012301.

It is not an unprimeable number, because it can be changed into a prime (21213221012323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93040442923 + ... + 93040443150.

It is an arithmetic number, because the mean of its divisors is an integer number (2791213291110).

Almost surely, 2^{21213221012322} is an apocalyptic number.

21213221012322 is an abundant number, since it is smaller than the sum of its proper divisors (23446191645438).

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

21213221012322 is a wasteful number, since it uses less digits than its factorization.

21213221012322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186080886097.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21213221012322 its reverse (22321012231212), we get a palindrome (43534233243534).

The spelling of 21213221012322 in words is "twenty-one trillion, two hundred thirteen billion, two hundred twenty-one million, twelve thousand, three hundred twenty-two".