1200221012011 has 4 divisors (see below), whose sum is σ = 1371681156592. Its totient is φ = 1028760867432.

The previous prime is 1200221011961. The next prime is 1200221012041. The reversal of 1200221012011 is 1102101220021.

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 1200221012011 - 2¹⁹ = 1200220487723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200221011982 and 1200221012000.

It is not an unprimeable number, because it can be changed into a prime (1200221012041) 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, 85730072280 + ... + 85730072293.

It is an arithmetic number, because the mean of its divisors is an integer number (342920289148).

Almost surely, 2^{1200221012011} is an apocalyptic number.

1200221012011 is a deficient number, since it is larger than the sum of its proper divisors (171460144581).

1200221012011 is an equidigital number, since it uses as much as digits as its factorization.

1200221012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171460144580.

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

Adding to 1200221012011 its reverse (1102101220021), we get a palindrome (2302322232032).

The spelling of 1200221012011 in words is "one trillion, two hundred billion, two hundred twenty-one million, twelve thousand, eleven".