10010020212221 has 4 divisors (see below), whose sum is σ = 10010026848192. Its totient is φ = 10010013576252.

The previous prime is 10010020212193. The next prime is 10010020212251. The reversal of 10010020212221 is 12221202001001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10010020212221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10010020212196 and 10010020212205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010020212251) 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, 159740 + ... + 4477226.

It is an arithmetic number, because the mean of its divisors is an integer number (2502506712048).

Almost surely, 2^{10010020212221} is an apocalyptic number.

It is an amenable number.

10010020212221 is a deficient number, since it is larger than the sum of its proper divisors (6635971).

10010020212221 is an equidigital number, since it uses as much as digits as its factorization.

10010020212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6635970.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10010020212221 its reverse (12221202001001), we get a palindrome (22231222213222).

The spelling of 10010020212221 in words is "ten trillion, ten billion, twenty million, two hundred twelve thousand, two hundred twenty-one".