1000010210021 has 4 divisors (see below), whose sum is σ = 1000224212172. Its totient is φ = 999796207872.

The previous prime is 1000010210011. The next prime is 1000010210027. The reversal of 1000010210021 is 1200120100001.

1000010210021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 901956681796 + 98053528225 = 949714^2 + 313135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000010210021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000010209990 and 1000010210008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000010210027) 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, 106994066 + ... + 107003411.

It is an arithmetic number, because the mean of its divisors is an integer number (250056053043).

Almost surely, 2^{1000010210021} is an apocalyptic number.

It is an amenable number.

1000010210021 is a deficient number, since it is larger than the sum of its proper divisors (214002151).

1000010210021 is an equidigital number, since it uses as much as digits as its factorization.

1000010210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214002150.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1000010210021 its reverse (1200120100001), we get a palindrome (2200130310022).

The spelling of 1000010210021 in words is "one trillion, ten million, two hundred ten thousand, twenty-one".