1000131123202 has 4 divisors (see below), whose sum is σ = 1500196684806. Its totient is φ = 500065561600.

The previous prime is 1000131123191. The next prime is 1000131123209. The reversal of 1000131123202 is 2023211310001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 726757955001 + 273373168201 = 852501^2 + 522851^2 .

It is not an unprimeable number, because it can be changed into a prime (1000131123209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250032780799 + ... + 250032780802.

Almost surely, 2^{1000131123202} is an apocalyptic number.

1000131123202 is a deficient number, since it is larger than the sum of its proper divisors (500065561604).

1000131123202 is an equidigital number, since it uses as much as digits as its factorization.

1000131123202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500065561603.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1000131123202 its reverse (2023211310001), we get a palindrome (3023342433203).

The spelling of 1000131123202 in words is "one trillion, one hundred thirty-one million, one hundred twenty-three thousand, two hundred two".