10000010101021 has 4 divisors (see below), whose sum is σ = 10007840963772. Its totient is φ = 9992179238272.

The previous prime is 10000010101013. The next prime is 10000010101069. The reversal of 10000010101021 is 12010101000001.

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 5066613835396 + 4933396265625 = 2250914^2 + 2221125^2 .

It is a cyclic number.

It is not a de Polignac number, because 10000010101021 - 2³ = 10000010101013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10000010100995 and 10000010101013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000010101091) 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, 3915429460 + ... + 3915432013.

It is an arithmetic number, because the mean of its divisors is an integer number (2501960240943).

Almost surely, 2^{10000010101021} is an apocalyptic number.

It is an amenable number.

10000010101021 is a deficient number, since it is larger than the sum of its proper divisors (7830862751).

10000010101021 is an equidigital number, since it uses as much as digits as its factorization.

10000010101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7830862750.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 10000010101021 its reverse (12010101000001), we get a palindrome (22010111101022).

The spelling of 10000010101021 in words is "ten trillion, ten million, one hundred one thousand, twenty-one".