10210202021 has 24 divisors (see below), whose sum is σ = 10889370744. Its totient is φ = 9569957760.

The previous prime is 10210202017. The next prime is 10210202039. The reversal of 10210202021 is 12020201201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 292033921 + 9918168100 = 17089^2 + 99590^2 .

It is not a de Polignac number, because 10210202021 - 2² = 10210202017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10210201993 and 10210202011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10210202071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12810395 + ... + 12811191.

It is an arithmetic number, because the mean of its divisors is an integer number (453723781).

Almost surely, 2^10210202021 is an apocalyptic number.

It is an amenable number.

10210202021 is a deficient number, since it is larger than the sum of its proper divisors (679168723).

10210202021 is an equidigital number, since it uses as much as digits as its factorization.

10210202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301 (or 1278 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10210202021 its reverse (12020201201), we get a palindrome (22230403222).

The spelling of 10210202021 in words is "ten billion, two hundred ten million, two hundred two thousand, twenty-one".