12201021021222 has 24 divisors (see below), whose sum is σ = 28838776959720. Its totient is φ = 3697279097280.

The previous prime is 12201021021197. The next prime is 12201021021239. The reversal of 12201021021222 is 22212012010221.

It is a happy number.

12201021021222 is a `hidden beast` number, since 1 + 220 + 1 + 0 + 210 + 212 + 22 = 666.

It is a super-2 number, since 2×12201021021222² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12201021021195 and 12201021021204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30810658947 + ... + 30810659342.

It is an arithmetic number, because the mean of its divisors is an integer number (1201615706655).

Almost surely, 2^{12201021021222} is an apocalyptic number.

12201021021222 is an abundant number, since it is smaller than the sum of its proper divisors (16637755938498).

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

12201021021222 is a wasteful number, since it uses less digits than its factorization.

12201021021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61621318308 (or 61621318305 counting only the distinct ones).

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

Adding to 12201021021222 its reverse (22212012010221), we get a palindrome (34413033031443).

The spelling of 12201021021222 in words is "twelve trillion, two hundred one billion, twenty-one million, twenty-one thousand, two hundred twenty-two".