10022020100021 has 4 divisors (see below), whose sum is σ = 10023835360044. Its totient is φ = 10020204840000.

The previous prime is 10022020100017. The next prime is 10022020100129. The reversal of 10022020100021 is 12000102022001.

It is a happy number.

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 1880779102225 + 8141240997796 = 1371415^2 + 2853286^2 .

It is a cyclic number.

It is not a de Polignac number, because 10022020100021 - 2² = 10022020100017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10022020099975 and 10022020100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10022020100221) 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, 907621730 + ... + 907632771.

It is an arithmetic number, because the mean of its divisors is an integer number (2505958840011).

Almost surely, 2^{10022020100021} is an apocalyptic number.

It is an amenable number.

10022020100021 is a deficient number, since it is larger than the sum of its proper divisors (1815260023).

10022020100021 is an equidigital number, since it uses as much as digits as its factorization.

10022020100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815260022.

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

Adding to 10022020100021 its reverse (12000102022001), we get a palindrome (22022122122022).

The spelling of 10022020100021 in words is "ten trillion, twenty-two billion, twenty million, one hundred thousand, twenty-one".