12011222022122 has 4 divisors (see below), whose sum is σ = 18016833033186. Its totient is φ = 6005611011060.

The previous prime is 12011222022091. The next prime is 12011222022127. The reversal of 12011222022122 is 22122022211021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12010722991201 + 499030921 = 3465649^2 + 22339^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12011222022094 and 12011222022103.

It is not an unprimeable number, because it can be changed into a prime (12011222022127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3002805505529 + ... + 3002805505532.

Almost surely, 2^{12011222022122} is an apocalyptic number.

12011222022122 is a deficient number, since it is larger than the sum of its proper divisors (6005611011064).

12011222022122 is an equidigital number, since it uses as much as digits as its factorization.

12011222022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6005611011063.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12011222022122 its reverse (22122022211021), we get a palindrome (34133244233143).

The spelling of 12011222022122 in words is "twelve trillion, eleven billion, two hundred twenty-two million, twenty-two thousand, one hundred twenty-two".