220110112202021 has 2 divisors, whose sum is σ = 220110112202022. Its totient is φ = 220110112202020.

The previous prime is 220110112202017. The next prime is 220110112202053. The reversal of 220110112202021 is 120202211011022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172455044541796 + 47655067660225 = 13132214^2 + 6903265^2 .

It is a cyclic number.

It is not a de Polignac number, because 220110112202021 - 2² = 220110112202017 is a prime.

It is a super-2 number, since 2×220110112202021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220110112702021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110055056101010 + 110055056101011.

It is an arithmetic number, because the mean of its divisors is an integer number (110055056101011).

Almost surely, 2^{220110112202021} is an apocalyptic number.

It is an amenable number.

220110112202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

220110112202021 is an equidigital number, since it uses as much as digits as its factorization.

220110112202021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220110112202021 its reverse (120202211011022), we get a palindrome (340312323213043).

The spelling of 220110112202021 in words is "two hundred twenty trillion, one hundred ten billion, one hundred twelve million, two hundred two thousand, twenty-one".