2210310100021 has 2 divisors, whose sum is σ = 2210310100022. Its totient is φ = 2210310100020.

The previous prime is 2210310100001. The next prime is 2210310100057. The reversal of 2210310100021 is 1200010130122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1150674563025 + 1059635536996 = 1072695^2 + 1029386^2 .

It is a cyclic number.

It is not a de Polignac number, because 2210310100021 - 2⁵ = 2210310099989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2210310099974 and 2210310100010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2210310100001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105155050010 + 1105155050011.

It is an arithmetic number, because the mean of its divisors is an integer number (1105155050011).

Almost surely, 2^{2210310100021} is an apocalyptic number.

It is an amenable number.

2210310100021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2210310100021 is an equidigital number, since it uses as much as digits as its factorization.

2210310100021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 2210310100021 its reverse (1200010130122), we get a palindrome (3410320230143).

The spelling of 2210310100021 in words is "two trillion, two hundred ten billion, three hundred ten million, one hundred thousand, twenty-one".