1220200020211 has 4 divisors (see below), whose sum is σ = 1220666281912. Its totient is φ = 1219733758512.

The previous prime is 1220200020199. The next prime is 1220200020241. The reversal of 1220200020211 is 1120200020221.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220200020211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220200020191 and 1220200020200.

It is not an unprimeable number, because it can be changed into a prime (1220200020241) 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, 233126925 + ... + 233132158.

It is an arithmetic number, because the mean of its divisors is an integer number (305166570478).

Almost surely, 2^{1220200020211} is an apocalyptic number.

1220200020211 is a deficient number, since it is larger than the sum of its proper divisors (466261701).

1220200020211 is an equidigital number, since it uses as much as digits as its factorization.

1220200020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466261700.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1220200020211 its reverse (1120200020221), we get a palindrome (2340400040432).

The spelling of 1220200020211 in words is "one trillion, two hundred twenty billion, two hundred million, twenty thousand, two hundred eleven".