21121222322 has 16 divisors (see below), whose sum is σ = 33300623232. Its totient is φ = 10027717920.

The previous prime is 21121222303. The next prime is 21121222327. The reversal of 21121222322 is 22322212112.

It is a super-2 number, since 2×21121222322² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21121222294 and 21121222303.

It is not an unprimeable number, because it can be changed into a prime (21121222327) 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, 1669454 + ... + 1682057.

It is an arithmetic number, because the mean of its divisors is an integer number (2081288952).

Almost surely, 2^21121222322 is an apocalyptic number.

21121222322 is a deficient number, since it is larger than the sum of its proper divisors (12179400910).

21121222322 is a wasteful number, since it uses less digits than its factorization.

21121222322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3351673.

The product of its digits is 384, while the sum is 20.

Adding to 21121222322 its reverse (22322212112), we get a palindrome (43443434434).

The spelling of 21121222322 in words is "twenty-one billion, one hundred twenty-one million, two hundred twenty-two thousand, three hundred twenty-two".