1031012111201 has 4 divisors (see below), whose sum is σ = 1031241586452. Its totient is φ = 1030782635952.

The previous prime is 1031012111197. The next prime is 1031012111203. The reversal of 1031012111201 is 1021112101301.

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

It can be written as a sum of positive squares in 2 ways, for example, as 766071315025 + 264940796176 = 875255^2 + 514724^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031012111201 - 2² = 1031012111197 is a prime.

It is a super-3 number, since 3×1031012111201³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031012111203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114730886 + ... + 114739871.

It is an arithmetic number, because the mean of its divisors is an integer number (257810396613).

Almost surely, 2^{1031012111201} is an apocalyptic number.

It is an amenable number.

1031012111201 is a deficient number, since it is larger than the sum of its proper divisors (229475251).

1031012111201 is an equidigital number, since it uses as much as digits as its factorization.

1031012111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229475250.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 1031012111201 its reverse (1021112101301), we get a palindrome (2052124212502).

The spelling of 1031012111201 in words is "one trillion, thirty-one billion, twelve million, one hundred eleven thousand, two hundred one".