12201231220122 has 48 divisors (see below), whose sum is σ = 28387698568992. Its totient is φ = 3485923529760.

The previous prime is 12201231220117. The next prime is 12201231220127. The reversal of 12201231220122 is 22102213210221.

12201231220122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12201231220117) and next prime (12201231220127).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (12201231220127) 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, 6461373 + ... + 8133375.

It is an arithmetic number, because the mean of its divisors is an integer number (591410386854).

Almost surely, 2^{12201231220122} is an apocalyptic number.

12201231220122 is an abundant number, since it is smaller than the sum of its proper divisors (16186467348870).

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

12201231220122 is a wasteful number, since it uses less digits than its factorization.

12201231220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696843 (or 1696836 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 12201231220122 its reverse (22102213210221), we get a palindrome (34303444430343).

The spelling of 12201231220122 in words is "twelve trillion, two hundred one billion, two hundred thirty-one million, two hundred twenty thousand, one hundred twenty-two".