1212212113235 has 4 divisors (see below), whose sum is σ = 1454654535888. Its totient is φ = 969769690584.

The previous prime is 1212212113219. The next prime is 1212212113319. The reversal of 1212212113235 is 5323112122121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1212212113235 - 2⁴ = 1212212113219 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121221211319 + ... + 121221211328.

It is an arithmetic number, because the mean of its divisors is an integer number (363663633972).

Almost surely, 2^{1212212113235} is an apocalyptic number.

1212212113235 is a deficient number, since it is larger than the sum of its proper divisors (242442422653).

1212212113235 is an equidigital number, since it uses as much as digits as its factorization.

1212212113235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242442422652.

The product of its digits is 1440, while the sum is 26.

Adding to 1212212113235 its reverse (5323112122121), we get a palindrome (6535324235356).

The spelling of 1212212113235 in words is "one trillion, two hundred twelve billion, two hundred twelve million, one hundred thirteen thousand, two hundred thirty-five".