12221012210022 has 96 divisors (see below), whose sum is σ = 33039040320000. Its totient is φ = 3171746972160.

The previous prime is 12221012209927. The next prime is 12221012210027. The reversal of 12221012210022 is 22001221012221.

It is a happy number.

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 = 12221012209977 and 12221012210004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221012210027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1798698 + ... + 5260925.

It is an arithmetic number, because the mean of its divisors is an integer number (344156670000).

Almost surely, 2^{12221012210022} is an apocalyptic number.

12221012210022 is an abundant number, since it is smaller than the sum of its proper divisors (20818028109978).

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

12221012210022 is a wasteful number, since it uses less digits than its factorization.

12221012210022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7060898 (or 7060895 counting only the distinct ones).

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

Adding to 12221012210022 its reverse (22001221012221), we get a palindrome (34222233222243).

The spelling of 12221012210022 in words is "twelve trillion, two hundred twenty-one billion, twelve million, two hundred ten thousand, twenty-two".