1200221011011 has 64 divisors (see below), whose sum is σ = 1820694007296. Its totient is φ = 696810470400.

The previous prime is 1200221010971. The next prime is 1200221011039. The reversal of 1200221011011 is 1101101220021.

It is not a de Polignac number, because 1200221011011 - 2⁷ = 1200221010883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200221011061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 250408831 + ... + 250413623.

It is an arithmetic number, because the mean of its divisors is an integer number (28448343864).

Almost surely, 2^{1200221011011} is an apocalyptic number.

1200221011011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1200221011011 is a deficient number, since it is larger than the sum of its proper divisors (620472996285).

1200221011011 is a wasteful number, since it uses less digits than its factorization.

1200221011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7972.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1200221011011 its reverse (1101101220021), we get a palindrome (2301322231032).

The spelling of 1200221011011 in words is "one trillion, two hundred billion, two hundred twenty-one million, eleven thousand, eleven".