1200011132031 has 4 divisors (see below), whose sum is σ = 1600014842712. Its totient is φ = 800007421352.

The previous prime is 1200011131981. The next prime is 1200011132059. The reversal of 1200011132031 is 1302311100021.

It is a happy number.

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 1200011132031 - 2⁹ = 1200011131519 is a prime.

It is a super-2 number, since 2×1200011132031² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1200011132031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200011132071) 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, 200001855336 + ... + 200001855341.

It is an arithmetic number, because the mean of its divisors is an integer number (400003710678).

Almost surely, 2^{1200011132031} is an apocalyptic number.

1200011132031 is a deficient number, since it is larger than the sum of its proper divisors (400003710681).

1200011132031 is an equidigital number, since it uses as much as digits as its factorization.

1200011132031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400003710680.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1200011132031 its reverse (1302311100021), we get a palindrome (2502322232052).

The spelling of 1200011132031 in words is "one trillion, two hundred billion, eleven million, one hundred thirty-two thousand, thirty-one".