1200021233011 has 4 divisors (see below), whose sum is σ = 1200030042024. Its totient is φ = 1200012424000.

The previous prime is 1200021233003. The next prime is 1200021233023. The reversal of 1200021233011 is 1103321200021.

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 1200021233011 - 2³ = 1200021233003 is a prime.

It is a super-2 number, since 2×1200021233011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200021233041) 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, 4196905 + ... + 4473706.

It is an arithmetic number, because the mean of its divisors is an integer number (300007510506).

Almost surely, 2^{1200021233011} is an apocalyptic number.

1200021233011 is a deficient number, since it is larger than the sum of its proper divisors (8809013).

1200021233011 is an equidigital number, since it uses as much as digits as its factorization.

1200021233011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8809012.

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

Adding to 1200021233011 its reverse (1103321200021), we get a palindrome (2303342433032).

The spelling of 1200021233011 in words is "one trillion, two hundred billion, twenty-one million, two hundred thirty-three thousand, eleven".