1212222011022 has 96 divisors (see below), whose sum is σ = 2905506938880. Its totient is φ = 362191901760.

The previous prime is 1212222011003. The next prime is 1212222011027. The reversal of 1212222011022 is 2201102222121.

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 = 1212222010986 and 1212222011004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212222011027) 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, 11412723 + ... + 11518449.

It is an arithmetic number, because the mean of its divisors is an integer number (30265697280).

Almost surely, 2^{1212222011022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212222011022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1452753469440).

1212222011022 is an abundant number, since it is smaller than the sum of its proper divisors (1693284927858).

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

1212222011022 is a wasteful number, since it uses less digits than its factorization.

1212222011022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106558 (or 106555 counting only the distinct ones).

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

Adding to 1212222011022 its reverse (2201102222121), we get a palindrome (3413324233143).

The spelling of 1212222011022 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, eleven thousand, twenty-two".