1001201231123 has 4 divisors (see below), whose sum is σ = 1024484980728. Its totient is φ = 977917481520.

The previous prime is 1001201231111. The next prime is 1001201231203. The reversal of 1001201231123 is 3211321021001.

1001201231123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1001201231123 - 2¹² = 1001201227027 is a prime.

It is a super-2 number, since 2×1001201231123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001201231323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11641874738 + ... + 11641874823.

It is an arithmetic number, because the mean of its divisors is an integer number (256121245182).

Almost surely, 2^{1001201231123} is an apocalyptic number.

1001201231123 is a deficient number, since it is larger than the sum of its proper divisors (23283749605).

1001201231123 is an equidigital number, since it uses as much as digits as its factorization.

1001201231123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23283749604.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1001201231123 its reverse (3211321021001), we get a palindrome (4212522252124).

The spelling of 1001201231123 in words is "one trillion, one billion, two hundred one million, two hundred thirty-one thousand, one hundred twenty-three".