1212101102122 has 4 divisors (see below), whose sum is σ = 1818151653186. Its totient is φ = 606050551060.

The previous prime is 1212101102119. The next prime is 1212101102189. The reversal of 1212101102122 is 2212011012121.

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., 921525121521 + 290575980601 = 959961^2 + 539051^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212101102096 and 1212101102105.

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 as a sum of consecutive naturals, namely, 303025275529 + ... + 303025275532.

Almost surely, 2^{1212101102122} is an apocalyptic number.

1212101102122 is a deficient number, since it is larger than the sum of its proper divisors (606050551064).

1212101102122 is an equidigital number, since it uses as much as digits as its factorization.

1212101102122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606050551063.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212101102122 its reverse (2212011012121), we get a palindrome (3424112114243).

Subtracting 1212101102122 from its reverse (2212011012121), we obtain a palindrome (999909909999).

The spelling of 1212101102122 in words is "one trillion, two hundred twelve billion, one hundred one million, one hundred two thousand, one hundred twenty-two".