10002200122021 has 4 divisors (see below), whose sum is σ = 10002223320012. Its totient is φ = 10002176924032.

The previous prime is 10002200121943. The next prime is 10002200122051. The reversal of 10002200122021 is 12022100220001.

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 421348984996 + 9580851137025 = 649114^2 + 3095295^2 .

It is a cyclic number.

It is not a de Polignac number, because 10002200122021 - 2⁹ = 10002200121509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10002200121992 and 10002200122010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002200122051) 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, 10939756 + ... + 11818741.

It is an arithmetic number, because the mean of its divisors is an integer number (2500555830003).

Almost surely, 2^{10002200122021} is an apocalyptic number.

It is an amenable number.

10002200122021 is a deficient number, since it is larger than the sum of its proper divisors (23197991).

10002200122021 is an equidigital number, since it uses as much as digits as its factorization.

10002200122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23197990.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10002200122021 its reverse (12022100220001), we get a palindrome (22024300342022).

The spelling of 10002200122021 in words is "ten trillion, two billion, two hundred million, one hundred twenty-two thousand, twenty-one".