101311123001 has 4 divisors (see below), whose sum is σ = 110521225104. Its totient is φ = 92101020900.

The previous prime is 101311122953. The next prime is 101311123007. The reversal of 101311123001 is 100321113101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100321113101 = 11 ⋅9120101191.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101311123001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101311123007) 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, 4605051035 + ... + 4605051056.

It is an arithmetic number, because the mean of its divisors is an integer number (27630306276).

Almost surely, 2^101311123001 is an apocalyptic number.

101311123001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

101311123001 is a deficient number, since it is larger than the sum of its proper divisors (9210102103).

101311123001 is an equidigital number, since it uses as much as digits as its factorization.

101311123001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9210102102.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 101311123001 its reverse (100321113101), we get a palindrome (201632236102).

The spelling of 101311123001 in words is "one hundred one billion, three hundred eleven million, one hundred twenty-three thousand, one".