220121001122111 has 32 divisors (see below), whose sum is σ = 231111850185216. Its totient is φ = 209253859056000.

The previous prime is 220121001122053. The next prime is 220121001122149. The reversal of 220121001122111 is 111221100121022.

It is not a de Polignac number, because 220121001122111 - 2⁶ = 220121001122047 is a prime.

It is a super-2 number, since 2×220121001122111² (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 220121001122111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220121001124111) 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 31 ways as a sum of consecutive naturals, for example, 2678775056 + ... + 2678857226.

It is an arithmetic number, because the mean of its divisors is an integer number (7222245318288).

Almost surely, 2^{220121001122111} is an apocalyptic number.

220121001122111 is a deficient number, since it is larger than the sum of its proper divisors (10990849063105).

220121001122111 is a wasteful number, since it uses less digits than its factorization.

220121001122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83663.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 220121001122111 its reverse (111221100121022), we get a palindrome (331342101243133).

The spelling of 220121001122111 in words is "two hundred twenty trillion, one hundred twenty-one billion, one million, one hundred twenty-two thousand, one hundred eleven".