1220011020211 has 4 divisors (see below), whose sum is σ = 1220056355232. Its totient is φ = 1219965685192.

The previous prime is 1220011020181. The next prime is 1220011020233. The reversal of 1220011020211 is 1120201100221.

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 1220011020211 - 2⁷ = 1220011020083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220011020191 and 1220011020200.

It is not an unprimeable number, because it can be changed into a prime (1220011020271) 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, 22627120 + ... + 22680973.

It is an arithmetic number, because the mean of its divisors is an integer number (305014088808).

Almost surely, 2^{1220011020211} is an apocalyptic number.

1220011020211 is a deficient number, since it is larger than the sum of its proper divisors (45335021).

1220011020211 is an equidigital number, since it uses as much as digits as its factorization.

1220011020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45335020.

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

Adding to 1220011020211 its reverse (1120201100221), we get a palindrome (2340212120432).

The spelling of 1220011020211 in words is "one trillion, two hundred twenty billion, eleven million, twenty thousand, two hundred eleven".