10213010021 has 2 divisors, whose sum is σ = 10213010022. Its totient is φ = 10213010020.

The previous prime is 10213010009. The next prime is 10213010029. The reversal of 10213010021 is 12001031201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8473202500 + 1739807521 = 92050^2 + 41711^2 .

It is a cyclic number.

It is not a de Polignac number, because 10213010021 - 2⁶ = 10213009957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10213009984 and 10213010011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10213010029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106505010 + 5106505011.

It is an arithmetic number, because the mean of its divisors is an integer number (5106505011).

Almost surely, 2^10213010021 is an apocalyptic number.

It is an amenable number.

10213010021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10213010021 is an equidigital number, since it uses as much as digits as its factorization.

10213010021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 10213010021 its reverse (12001031201), we get a palindrome (22214041222).

The spelling of 10213010021 in words is "ten billion, two hundred thirteen million, ten thousand, twenty-one".