1231210110001 has 8 divisors (see below), whose sum is σ = 1246071282624. Its totient is φ = 1216349587920.

The previous prime is 1231210109993. The next prime is 1231210110007. The reversal of 1231210110001 is 1000110121321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1231210110001 - 2³ = 1231210109993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231210110007) 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, 4419636 + ... + 4689946.

It is an arithmetic number, because the mean of its divisors is an integer number (155758910328).

Almost surely, 2^{1231210110001} is an apocalyptic number.

It is an amenable number.

1231210110001 is a deficient number, since it is larger than the sum of its proper divisors (14861172623).

1231210110001 is an equidigital number, since it uses as much as digits as its factorization.

1231210110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325271.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1231210110001 its reverse (1000110121321), we get a palindrome (2231320231322).

The spelling of 1231210110001 in words is "one trillion, two hundred thirty-one billion, two hundred ten million, one hundred ten thousand, one".