220111020110221 has 2 divisors, whose sum is σ = 220111020110222. Its totient is φ = 220111020110220.

The previous prime is 220111020110213. The next prime is 220111020110227. The reversal of 220111020110221 is 122011020111022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152060713064100 + 68050307046121 = 12331290^2 + 8249261^2 .

It is a cyclic number.

It is not a de Polignac number, because 220111020110221 - 2³ = 220111020110213 is a prime.

It is a super-2 number, since 2×220111020110221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220111020110195 and 220111020110204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220111020110227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110055510055110 + 110055510055111.

It is an arithmetic number, because the mean of its divisors is an integer number (110055510055111).

Almost surely, 2^{220111020110221} is an apocalyptic number.

It is an amenable number.

220111020110221 is a deficient number, since it is larger than the sum of its proper divisors (1).

220111020110221 is an equidigital number, since it uses as much as digits as its factorization.

220111020110221 is an evil number, because the sum of its binary digits is even.

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

Adding to 220111020110221 its reverse (122011020111022), we get a palindrome (342122040221243).

The spelling of 220111020110221 in words is "two hundred twenty trillion, one hundred eleven billion, twenty million, one hundred ten thousand, two hundred twenty-one".