12222222220122 has 64 divisors (see below), whose sum is σ = 24848246568960. Its totient is φ = 4006968223104.

The previous prime is 12222222220111. The next prime is 12222222220127. The reversal of 12222222220122 is 22102222222221.

It is a junction number, because it is equal to n+sod(n) for n = 12222222220092 and 12222222220101.

It is not an unprimeable number, because it can be changed into a prime (12222222220127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1607548773 + ... + 1607556375.

It is an arithmetic number, because the mean of its divisors is an integer number (388253852640).

Almost surely, 2^{12222222220122} is an apocalyptic number.

12222222220122 is an abundant number, since it is smaller than the sum of its proper divisors (12626024348838).

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

12222222220122 is a wasteful number, since it uses less digits than its factorization.

12222222220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13427.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 12222222220122 its reverse (22102222222221), we get a palindrome (34324444442343).

The spelling of 12222222220122 in words is "twelve trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty thousand, one hundred twenty-two".