220122011 has 4 divisors (see below), whose sum is σ = 231707400. Its totient is φ = 208536624.

The previous prime is 220121999. The next prime is 220122017. The reversal of 220122011 is 110221022.

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-220122011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220121983 and 220122001.

It is not an unprimeable number, because it can be changed into a prime (220122017) 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 3 ways as a sum of consecutive naturals, for example, 5792666 + ... + 5792703.

It is an arithmetic number, because the mean of its divisors is an integer number (57926850).

Almost surely, 2^220122011 is an apocalyptic number.

220122011 is a deficient number, since it is larger than the sum of its proper divisors (11585389).

220122011 is a wasteful number, since it uses less digits than its factorization.

220122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11585388.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 220122011 is about 14836.5093940590. The cubic root of 220122011 is about 603.7926526484.

Adding to 220122011 its reverse (110221022), we get a palindrome (330343033).

The spelling of 220122011 in words is "two hundred twenty million, one hundred twenty-two thousand, eleven".