22123011043221 has 64 divisors (see below), whose sum is σ = 32630208168960. Its totient is φ = 13220713059840.

The previous prime is 22123011043207. The next prime is 22123011043223. The reversal of 22123011043221 is 12234011032122.

It is not a de Polignac number, because 22123011043221 - 2²⁵ = 22122977488789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22123011043191 and 22123011043200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22123011043223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4232446410 + ... + 4232451636.

It is an arithmetic number, because the mean of its divisors is an integer number (509847002640).

Almost surely, 2^{22123011043221} is an apocalyptic number.

It is an amenable number.

22123011043221 is a deficient number, since it is larger than the sum of its proper divisors (10507197125739).

22123011043221 is a wasteful number, since it uses less digits than its factorization.

22123011043221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9026.

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

Adding to 22123011043221 its reverse (12234011032122), we get a palindrome (34357022075343).

The spelling of 22123011043221 in words is "twenty-two trillion, one hundred twenty-three billion, eleven million, forty-three thousand, two hundred twenty-one".