1200022220001 has 64 divisors (see below), whose sum is σ = 1926445178880. Its totient is φ = 656063400960.

The previous prime is 1200022219993. The next prime is 1200022220003. The reversal of 1200022220001 is 1000222200021.

It is not a de Polignac number, because 1200022220001 - 2³ = 1200022219993 is a prime.

It is a super-2 number, since 2×1200022220001² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1200022220003) 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, 959280 + ... + 1822158.

It is an arithmetic number, because the mean of its divisors is an integer number (30100705920).

Almost surely, 2^{1200022220001} is an apocalyptic number.

1200022220001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200022220001 is a deficient number, since it is larger than the sum of its proper divisors (726422958879).

1200022220001 is a wasteful number, since it uses less digits than its factorization.

1200022220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863014.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 1200022220001 its reverse (1000222200021), we get a palindrome (2200244420022).

It can be divided in two parts, 1 and 200022220001, that added together give a palindrome (200022220002).

The spelling of 1200022220001 in words is "one trillion, two hundred billion, twenty-two million, two hundred twenty thousand, one".