10210010210021 has 4 divisors (see below), whose sum is σ = 10210021250700. Its totient is φ = 10209999169344.

The previous prime is 10210010209981. The next prime is 10210010210089. The reversal of 10210010210021 is 12001201001201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3769383420100 + 6440626789921 = 1941490^2 + 2537839^2 .

It is a cyclic number.

It is not a de Polignac number, because 10210010210021 - 2²² = 10210006015717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10210010209984 and 10210010210011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10210010210921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3992186 + ... + 6029723.

It is an arithmetic number, because the mean of its divisors is an integer number (2552505312675).

Almost surely, 2^{10210010210021} is an apocalyptic number.

It is an amenable number.

10210010210021 is a deficient number, since it is larger than the sum of its proper divisors (11040679).

10210010210021 is a wasteful number, since it uses less digits than its factorization.

10210010210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11040678.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10210010210021 its reverse (12001201001201), we get a palindrome (22211211211222).

The spelling of 10210010210021 in words is "ten trillion, two hundred ten billion, ten million, two hundred ten thousand, twenty-one".