210021022100005 has 16 divisors (see below), whose sum is σ = 260716473442800. Its totient is φ = 162222685148160.

The previous prime is 210021022099957. The next prime is 210021022100039. The reversal of 210021022100005 is 500001220120012.

It is a happy number.

210021022100005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 4635034385569 + 205385987714436 = 2152913^2 + 14331294^2 .

It is not a de Polignac number, because 210021022100005 - 2¹³ = 210021022091813 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56388175 + ... + 59997235.

It is an arithmetic number, because the mean of its divisors is an integer number (16294779590175).

Almost surely, 2^{210021022100005} is an apocalyptic number.

It is an amenable number.

210021022100005 is a deficient number, since it is larger than the sum of its proper divisors (50695451342795).

210021022100005 is a wasteful number, since it uses less digits than its factorization.

210021022100005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010424.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 210021022100005 its reverse (500001220120012), we get a palindrome (710022242220017).

The spelling of 210021022100005 in words is "two hundred ten trillion, twenty-one billion, twenty-two million, one hundred thousand, five".