12121211022122 has 32 divisors (see below), whose sum is σ = 19388077518672. Its totient is φ = 5663636020224.

The previous prime is 12121211022059. The next prime is 12121211022133. The reversal of 12121211022122 is 22122011212121.

It can be written as a sum of positive squares in 8 ways, for example, as 11533230315721 + 587980706401 = 3396061^2 + 766799^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12121211022094 and 12121211022103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6502148 + ... + 8156000.

Almost surely, 2^{12121211022122} is an apocalyptic number.

12121211022122 is a deficient number, since it is larger than the sum of its proper divisors (7266866496550).

12121211022122 is a wasteful number, since it uses less digits than its factorization.

12121211022122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655402.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12121211022122 its reverse (22122011212121), we get a palindrome (34243222234243).

The spelling of 12121211022122 in words is "twelve trillion, one hundred twenty-one billion, two hundred eleven million, twenty-two thousand, one hundred twenty-two".