101110220020021 has 2 divisors, whose sum is σ = 101110220020022. Its totient is φ = 101110220020020.

The previous prime is 101110220019989. The next prime is 101110220020039. The reversal of 101110220020021 is 120020022011101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93969487013796 + 7140733006225 = 9693786^2 + 2672215^2 .

It is a cyclic number.

It is not a de Polignac number, because 101110220020021 - 2⁵ = 101110220019989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101110220019983 and 101110220020010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101110220026021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50555110010010 + 50555110010011.

It is an arithmetic number, because the mean of its divisors is an integer number (50555110010011).

Almost surely, 2^{101110220020021} is an apocalyptic number.

It is an amenable number.

101110220020021 is a deficient number, since it is larger than the sum of its proper divisors (1).

101110220020021 is an equidigital number, since it uses as much as digits as its factorization.

101110220020021 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 101110220020021 its reverse (120020022011101), we get a palindrome (221130242031122).

The spelling of 101110220020021 in words is "one hundred one trillion, one hundred ten billion, two hundred twenty million, twenty thousand, twenty-one".