1220202011211 has 12 divisors (see below), whose sum is σ = 1700747859048. Its totient is φ = 778099832224.

The previous prime is 1220202011159. The next prime is 1220202011251. The reversal of 1220202011211 is 1121102020221.

It is not a de Polignac number, because 1220202011211 - 2¹⁰ = 1220202010187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220202011251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 384435090 + ... + 384438263.

It is an arithmetic number, because the mean of its divisors is an integer number (141728988254).

Almost surely, 2^{1220202011211} is an apocalyptic number.

1220202011211 is a deficient number, since it is larger than the sum of its proper divisors (480545847837).

1220202011211 is an equidigital number, since it uses as much as digits as its factorization.

1220202011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768873402 (or 768873379 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1220202011211 its reverse (1121102020221), we get a palindrome (2341304031432).

The spelling of 1220202011211 in words is "one trillion, two hundred twenty billion, two hundred two million, eleven thousand, two hundred eleven".