1220022221011 has 16 divisors (see below), whose sum is σ = 1400163667200. Its totient is φ = 1052715613600.

The previous prime is 1220022221003. The next prime is 1220022221023. The reversal of 1220022221011 is 1101222200221.

It is a happy number.

It is not a de Polignac number, because 1220022221011 - 2³ = 1220022221003 is a prime.

It is a super-2 number, since 2×1220022221011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220022221311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32392375 + ... + 32430016.

It is an arithmetic number, because the mean of its divisors is an integer number (87510229200).

Almost surely, 2^{1220022221011} is an apocalyptic number.

1220022221011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1220022221011 is a deficient number, since it is larger than the sum of its proper divisors (180141446189).

1220022221011 is a wasteful number, since it uses less digits than its factorization.

1220022221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64822490.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1220022221011 its reverse (1101222200221), we get a palindrome (2321244421232).

The spelling of 1220022221011 in words is "one trillion, two hundred twenty billion, twenty-two million, two hundred twenty-one thousand, eleven".