1201202122123 has 2 divisors, whose sum is σ = 1201202122124. Its totient is φ = 1201202122122.

The previous prime is 1201202122121. The next prime is 1201202122163. The reversal of 1201202122123 is 3212212021021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201202122123 - 2¹ = 1201202122121 is a prime.

Together with 1201202122121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1201202122123.

It is not a weakly prime, because it can be changed into another prime (1201202122121) 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 as a sum of consecutive naturals, namely, 600601061061 + 600601061062.

It is an arithmetic number, because the mean of its divisors is an integer number (600601061062).

Almost surely, 2^{1201202122123} is an apocalyptic number.

1201202122123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201202122123 is an equidigital number, since it uses as much as digits as its factorization.

1201202122123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1201202122123 its reverse (3212212021021), we get a palindrome (4413414143144).

The spelling of 1201202122123 in words is "one trillion, two hundred one billion, two hundred two million, one hundred twenty-two thousand, one hundred twenty-three".