12212033223221 has 16 divisors (see below), whose sum is σ = 13764681275520. Its totient is φ = 10749955296960.

The previous prime is 12212033223209. The next prime is 12212033223239. The reversal of 12212033223221 is 12232233021221.

It is a cyclic number.

It is not a de Polignac number, because 12212033223221 - 2⁶ = 12212033223157 is a prime.

It is a super-2 number, since 2×12212033223221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212033223421) 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, 61597286 + ... + 61795223.

It is an arithmetic number, because the mean of its divisors is an integer number (860292579720).

Almost surely, 2^{12212033223221} is an apocalyptic number.

It is an amenable number.

12212033223221 is a deficient number, since it is larger than the sum of its proper divisors (1552648052299).

12212033223221 is a wasteful number, since it uses less digits than its factorization.

12212033223221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123392876.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 12212033223221 its reverse (12232233021221), we get a palindrome (24444266244442).

The spelling of 12212033223221 in words is "twelve trillion, two hundred twelve billion, thirty-three million, two hundred twenty-three thousand, two hundred twenty-one".