1201322222123 has 16 divisors (see below), whose sum is σ = 1234214845920. Its totient is φ = 1168603392000.

The previous prime is 1201322222083. The next prime is 1201322222147. The reversal of 1201322222123 is 3212222231021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1201322222123 - 2¹² = 1201322218027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201322227123) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 37999523 + ... + 38031123.

It is an arithmetic number, because the mean of its divisors is an integer number (77138427870).

Almost surely, 2^{1201322222123} is an apocalyptic number.

1201322222123 is a deficient number, since it is larger than the sum of its proper divisors (32892623797).

1201322222123 is a wasteful number, since it uses less digits than its factorization.

1201322222123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34318.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1201322222123 its reverse (3212222231021), we get a palindrome (4413544453144).

The spelling of 1201322222123 in words is "one trillion, two hundred one billion, three hundred twenty-two million, two hundred twenty-two thousand, one hundred twenty-three".