200110220101021 has 2 divisors, whose sum is σ = 200110220101022. Its totient is φ = 200110220101020.

The previous prime is 200110220101013. The next prime is 200110220101061. The reversal of 200110220101021 is 120101022011002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107659591335396 + 92450628765625 = 10375914^2 + 9615125^2 .

It is a cyclic number.

It is not a de Polignac number, because 200110220101021 - 2³ = 200110220101013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200110220100992 and 200110220101010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200110220101061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100055110050510 + 100055110050511.

It is an arithmetic number, because the mean of its divisors is an integer number (100055110050511).

Almost surely, 2^{200110220101021} is an apocalyptic number.

It is an amenable number.

200110220101021 is a deficient number, since it is larger than the sum of its proper divisors (1).

200110220101021 is an equidigital number, since it uses as much as digits as its factorization.

200110220101021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 200110220101021 its reverse (120101022011002), we get a palindrome (320211242112023).

The spelling of 200110220101021 in words is "two hundred trillion, one hundred ten billion, two hundred twenty million, one hundred one thousand, twenty-one".