220121010220111 has 32 divisors (see below), whose sum is σ = 295548393401856. Its totient is φ = 158328100656000.

The previous prime is 220121010220091. The next prime is 220121010220117. The reversal of 220121010220111 is 111022010121022.

It is not a de Polignac number, because 220121010220111 - 2¹⁷ = 220121010089039 is a prime.

It is a super-2 number, since 2×220121010220111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220121010220117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 362279676 + ... + 362886766.

It is an arithmetic number, because the mean of its divisors is an integer number (9235887293808).

Almost surely, 2^{220121010220111} is an apocalyptic number.

220121010220111 is a deficient number, since it is larger than the sum of its proper divisors (75427383181745).

220121010220111 is a wasteful number, since it uses less digits than its factorization.

220121010220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969343.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 220121010220111 its reverse (111022010121022), we get a palindrome (331143020341133).

The spelling of 220121010220111 in words is "two hundred twenty trillion, one hundred twenty-one billion, ten million, two hundred twenty thousand, one hundred eleven".