1231111300101 has 8 divisors (see below), whose sum is σ = 1641828862080. Its totient is φ = 820567302432.

The previous prime is 1231111300099. The next prime is 1231111300117. The reversal of 1231111300101 is 1010031111321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1231111300101 - 2¹ = 1231111300099 is a prime.

It is a super-2 number, since 2×1231111300101² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231111300801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43374525 + ... + 43402898.

It is an arithmetic number, because the mean of its divisors is an integer number (205228607760).

Almost surely, 2^{1231111300101} is an apocalyptic number.

It is an amenable number.

1231111300101 is a deficient number, since it is larger than the sum of its proper divisors (410717561979).

1231111300101 is an equidigital number, since it uses as much as digits as its factorization.

1231111300101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86782155.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 1231111300101 its reverse (1010031111321), we get a palindrome (2241142411422).

The spelling of 1231111300101 in words is "one trillion, two hundred thirty-one billion, one hundred eleven million, three hundred thousand, one hundred one".