220122221211 has 72 divisors (see below), whose sum is σ = 336006268416. Its totient is φ = 138845388000.

The previous prime is 220122221191. The next prime is 220122221243. The reversal of 220122221211 is 112122221022.

It is a happy number.

220122221211 is a `hidden beast` number, since 220 + 1 + 222 + 212 + 11 = 666.

It is not a de Polignac number, because 220122221211 - 2³⁰ = 219048479387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220122221911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 199566286 + ... + 199567388.

It is an arithmetic number, because the mean of its divisors is an integer number (4666753728).

Almost surely, 2^220122221211 is an apocalyptic number.

220122221211 is a deficient number, since it is larger than the sum of its proper divisors (115884047205).

220122221211 is a wasteful number, since it uses less digits than its factorization.

220122221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573 (or 1547 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 220122221211 its reverse (112122221022), we get a palindrome (332244442233).

The spelling of 220122221211 in words is "two hundred twenty billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred eleven".