121212223002011 has 4 divisors (see below), whose sum is σ = 121221177157752. Its totient is φ = 121203268846272.

The previous prime is 121212223001939. The next prime is 121212223002077. The reversal of 121212223002011 is 110200322212121.

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 121212223002011 - 2³⁸ = 120937345095067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121215223002011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4477057565 + ... + 4477084638.

It is an arithmetic number, because the mean of its divisors is an integer number (30305294289438).

Almost surely, 2^{121212223002011} is an apocalyptic number.

121212223002011 is a deficient number, since it is larger than the sum of its proper divisors (8954155741).

121212223002011 is an equidigital number, since it uses as much as digits as its factorization.

121212223002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8954155740.

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

Adding to 121212223002011 its reverse (110200322212121), we get a palindrome (231412545214132).

The spelling of 121212223002011 in words is "one hundred twenty-one trillion, two hundred twelve billion, two hundred twenty-three million, two thousand, eleven".