1200022211011 has 4 divisors (see below), whose sum is σ = 1292331611872. Its totient is φ = 1107712810152.

The previous prime is 1200022211009. The next prime is 1200022211021. The reversal of 1200022211011 is 1101122200021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1200022211011 - 2¹ = 1200022211009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 92309400847 = 1200022211011 / (1 + 2 + 0 + 0 + 0 + 2 + 2 + 2 + 1 + 1 + 0 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200022210982 and 1200022211000.

It is not an unprimeable number, because it can be changed into a prime (1200022211021) 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, 46154700411 + ... + 46154700436.

It is an arithmetic number, because the mean of its divisors is an integer number (323082902968).

Almost surely, 2^{1200022211011} is an apocalyptic number.

1200022211011 is a deficient number, since it is larger than the sum of its proper divisors (92309400861).

1200022211011 is an equidigital number, since it uses as much as digits as its factorization.

1200022211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92309400860.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1200022211011 its reverse (1101122200021), we get a palindrome (2301144411032).

The spelling of 1200022211011 in words is "one trillion, two hundred billion, twenty-two million, two hundred eleven thousand, eleven".