1212210020122 has 8 divisors (see below), whose sum is σ = 1843223455476. Its totient is φ = 597802201632.

The previous prime is 1212210020117. The next prime is 1212210020129. The reversal of 1212210020122 is 2210200122121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1211164079841 + 1045940281 = 1100529^2 + 32341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1212210020096 and 1212210020105.

It is not an unprimeable number, because it can be changed into a prime (1212210020129) 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 3 ways as a sum of consecutive naturals, for example, 4151404033 + ... + 4151404324.

Almost surely, 2^{1212210020122} is an apocalyptic number.

1212210020122 is a deficient number, since it is larger than the sum of its proper divisors (631013435354).

1212210020122 is an equidigital number, since it uses as much as digits as its factorization.

1212210020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8302808432.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212210020122 its reverse (2210200122121), we get a palindrome (3422410142243).

The spelling of 1212210020122 in words is "one trillion, two hundred twelve billion, two hundred ten million, twenty thousand, one hundred twenty-two".