12220210021221 has 24 divisors (see below), whose sum is σ = 17950749425856. Its totient is φ = 8009369778240.

The previous prime is 12220210021213. The next prime is 12220210021223. The reversal of 12220210021221 is 12212001202221.

It is a happy number.

12220210021221 is a `hidden beast` number, since 1 + 2 + 220 + 210 + 0 + 212 + 21 = 666.

12220210021221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12220210021221 - 2³ = 12220210021213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12220210021194 and 12220210021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220210021223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29699235 + ... + 30107888.

It is an arithmetic number, because the mean of its divisors is an integer number (747947892744).

Almost surely, 2^{12220210021221} is an apocalyptic number.

It is an amenable number.

12220210021221 is a deficient number, since it is larger than the sum of its proper divisors (5730539404635).

12220210021221 is a wasteful number, since it uses less digits than its factorization.

12220210021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59807513 (or 59807510 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12220210021221 its reverse (12212001202221), we get a palindrome (24432211223442).

The spelling of 12220210021221 in words is "twelve trillion, two hundred twenty billion, two hundred ten million, twenty-one thousand, two hundred twenty-one".