1001131203101 has 4 divisors (see below), whose sum is σ = 1001233714272. Its totient is φ = 1001028691932.

The previous prime is 1001131203089. The next prime is 1001131203139. The reversal of 1001131203101 is 1013021311001.

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.

It is a cyclic number.

It is not a de Polignac number, because 1001131203101 - 2²⁶ = 1001064094237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001131203161) 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, 51240935 + ... + 51260468.

It is an arithmetic number, because the mean of its divisors is an integer number (250308428568).

Almost surely, 2^{1001131203101} is an apocalyptic number.

It is an amenable number.

1001131203101 is a deficient number, since it is larger than the sum of its proper divisors (102511171).

1001131203101 is an equidigital number, since it uses as much as digits as its factorization.

1001131203101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102511170.

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

Adding to 1001131203101 its reverse (1013021311001), we get a palindrome (2014152514102).

The spelling of 1001131203101 in words is "one trillion, one billion, one hundred thirty-one million, two hundred three thousand, one hundred one".