1200021313011 has 16 divisors (see below), whose sum is σ = 1609965820800. Its totient is φ = 795056613120.

The previous prime is 1200021313003. The next prime is 1200021313027. The reversal of 1200021313011 is 1103131200021.

It is a happy number.

It is not a de Polignac number, because 1200021313011 - 2³ = 1200021313003 is a prime.

It is a super-2 number, since 2×1200021313011² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1200021313111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 955486 + ... + 1820163.

It is an arithmetic number, because the mean of its divisors is an integer number (100622863800).

Almost surely, 2^{1200021313011} is an apocalyptic number.

1200021313011 is a deficient number, since it is larger than the sum of its proper divisors (409944507789).

1200021313011 is a wasteful number, since it uses less digits than its factorization.

1200021313011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776546.

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

Adding to 1200021313011 its reverse (1103131200021), we get a palindrome (2303152513032).

The spelling of 1200021313011 in words is "one trillion, two hundred billion, twenty-one million, three hundred thirteen thousand, eleven".