12211121201022 has 32 divisors (see below), whose sum is σ = 27302302364160. Its totient is φ = 4045402112760.

The previous prime is 12211121201021. The next prime is 12211121201113. The reversal of 12211121201022 is 22010212111221.

It is a super-2 number, since 2×12211121201022² (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 = 12211121200986 and 12211121201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211121201021) 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, 693647254 + ... + 693664857.

It is an arithmetic number, because the mean of its divisors is an integer number (853196948880).

Almost surely, 2^{12211121201022} is an apocalyptic number.

12211121201022 is an abundant number, since it is smaller than the sum of its proper divisors (15091181163138).

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

12211121201022 is a wasteful number, since it uses less digits than its factorization.

12211121201022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387312285 (or 1387312279 counting only the distinct ones).

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

Adding to 12211121201022 its reverse (22010212111221), we get a palindrome (34221333312243).

The spelling of 12211121201022 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-one million, two hundred one thousand, twenty-two".