1201113313123 has 2 divisors, whose sum is σ = 1201113313124. Its totient is φ = 1201113313122.

The previous prime is 1201113313109. The next prime is 1201113313177. The reversal of 1201113313123 is 3213133111021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201113313123 - 2⁵ = 1201113313091 is a prime.

It is a super-2 number, since 2×1201113313123² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1201113313094 and 1201113313103.

It is not a weakly prime, because it can be changed into another prime (1201113319123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600556656561 + 600556656562.

It is an arithmetic number, because the mean of its divisors is an integer number (600556656562).

Almost surely, 2^{1201113313123} is an apocalyptic number.

1201113313123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201113313123 is an equidigital number, since it uses as much as digits as its factorization.

1201113313123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1201113313123 its reverse (3213133111021), we get a palindrome (4414246424144).

The spelling of 1201113313123 in words is "one trillion, two hundred one billion, one hundred thirteen million, three hundred thirteen thousand, one hundred twenty-three".