12211222001022 has 48 divisors (see below), whose sum is σ = 28937086205040. Its totient is φ = 3690857760000.

The previous prime is 12211222001009. The next prime is 12211222001023. The reversal of 12211222001022 is 22010022211221.

It is a happy number.

It is a super-2 number, since 2×12211222001022² (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 = 12211222000986 and 12211222001004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211222001023) 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, 79193979 + ... + 79348022.

It is an arithmetic number, because the mean of its divisors is an integer number (602855962605).

Almost surely, 2^{12211222001022} is an apocalyptic number.

12211222001022 is an abundant number, since it is smaller than the sum of its proper divisors (16725864204018).

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

12211222001022 is a wasteful number, since it uses less digits than its factorization.

12211222001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158542409 (or 158542406 counting only the distinct ones).

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

Adding to 12211222001022 its reverse (22010022211221), we get a palindrome (34221244212243).

The spelling of 12211222001022 in words is "twelve trillion, two hundred eleven billion, two hundred twenty-two million, one thousand, twenty-two".