12211121120202 has 96 divisors (see below), whose sum is σ = 28369926853632. Its totient is φ = 3786033664512.

The previous prime is 12211121120167. The next prime is 12211121120203. The reversal of 12211121120202 is 20202112111221.

12211121120202 is a `hidden beast` number, since 1 + 221 + 1 + 121 + 120 + 202 = 666.

It is a super-2 number, since 2×12211121120202² (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 not an unprimeable number, because it can be changed into a prime (12211121120203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26995783 + ... + 27444389.

It is an arithmetic number, because the mean of its divisors is an integer number (295520071392).

Almost surely, 2^{12211121120202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12211121120202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14184963426816).

12211121120202 is an abundant number, since it is smaller than the sum of its proper divisors (16158805733430).

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

12211121120202 is a wasteful number, since it uses less digits than its factorization.

12211121120202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450452 (or 450449 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12211121120202 its reverse (20202112111221), we get a palindrome (32413233231423).

The spelling of 12211121120202 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-one million, one hundred twenty thousand, two hundred two".