220221022121011 has 4 divisors (see below), whose sum is σ = 220221614744352. Its totient is φ = 220220429497672.

The previous prime is 220221022120969. The next prime is 220221022121021. The reversal of 220221022121011 is 110121220122022.

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 220221022121011 - 2¹¹ = 220221022118963 is a prime.

It is a super-2 number, since 2×220221022121011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220221022121011.

It is not an unprimeable number, because it can be changed into a prime (220221022121021) 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 3 ways as a sum of consecutive naturals, for example, 295753915 + ... + 296497588.

It is an arithmetic number, because the mean of its divisors is an integer number (55055403686088).

Almost surely, 2^{220221022121011} is an apocalyptic number.

220221022121011 is a deficient number, since it is larger than the sum of its proper divisors (592623341).

220221022121011 is an equidigital number, since it uses as much as digits as its factorization.

220221022121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592623340.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 220221022121011 its reverse (110121220122022), we get a palindrome (330342242243033).

The spelling of 220221022121011 in words is "two hundred twenty trillion, two hundred twenty-one billion, twenty-two million, one hundred twenty-one thousand, eleven".