1200011001023 has 8 divisors (see below), whose sum is σ = 1206060544080. Its totient is φ = 1193974075840.

The previous prime is 1200011001017. The next prime is 1200011001037. The reversal of 1200011001023 is 3201001100021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200011001023 - 2²⁴ = 1199994223807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200011000995 and 1200011001013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200011501023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2963753 + ... + 3344226.

It is an arithmetic number, because the mean of its divisors is an integer number (150757568010).

Almost surely, 2^{1200011001023} is an apocalyptic number.

1200011001023 is a deficient number, since it is larger than the sum of its proper divisors (6049543057).

1200011001023 is an equidigital number, since it uses as much as digits as its factorization.

1200011001023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6308937.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 1200011001023 its reverse (3201001100021), we get a palindrome (4401012101044).

The spelling of 1200011001023 in words is "one trillion, two hundred billion, eleven million, one thousand, twenty-three".