1011200111331 has 4 divisors (see below), whose sum is σ = 1348266815112. Its totient is φ = 674133407552.

The previous prime is 1011200111323. The next prime is 1011200111357. The reversal of 1011200111331 is 1331110021101.

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

It is a cyclic number.

It is not a de Polignac number, because 1011200111331 - 2³ = 1011200111323 is a prime.

It is a super-3 number, since 3×1011200111331³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1011200111331.

It is not an unprimeable number, because it can be changed into a prime (1011200111321) 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, 168533351886 + ... + 168533351891.

It is an arithmetic number, because the mean of its divisors is an integer number (337066703778).

Almost surely, 2^{1011200111331} is an apocalyptic number.

1011200111331 is a deficient number, since it is larger than the sum of its proper divisors (337066703781).

1011200111331 is an equidigital number, since it uses as much as digits as its factorization.

1011200111331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337066703780.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 1011200111331 its reverse (1331110021101), we get a palindrome (2342310132432).

The spelling of 1011200111331 in words is "one trillion, eleven billion, two hundred million, one hundred eleven thousand, three hundred thirty-one".