1212120222113 has 4 divisors (see below), whose sum is σ = 1221373048368. Its totient is φ = 1202867395860.

The previous prime is 1212120222109. The next prime is 1212120222121. The reversal of 1212120222113 is 3112220212121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1212120222113 - 2² = 1212120222109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212120222143) 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, 4626412931 + ... + 4626413192.

It is an arithmetic number, because the mean of its divisors is an integer number (305343262092).

Almost surely, 2^{1212120222113} is an apocalyptic number.

It is an amenable number.

1212120222113 is a deficient number, since it is larger than the sum of its proper divisors (9252826255).

1212120222113 is an equidigital number, since it uses as much as digits as its factorization.

1212120222113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9252826254.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1212120222113 its reverse (3112220212121), we get a palindrome (4324340434234).

The spelling of 1212120222113 in words is "one trillion, two hundred twelve billion, one hundred twenty million, two hundred twenty-two thousand, one hundred thirteen".