10221200200021 has 4 divisors (see below), whose sum is σ = 10222749108000. Its totient is φ = 10219651292044.

The previous prime is 10221200199983. The next prime is 10221200200033. The reversal of 10221200200021 is 12000200212201.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 10221200200021 - 2³⁷ = 10083761246549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10221200199974 and 10221200200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221200209021) 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, 774444091 + ... + 774457288.

It is an arithmetic number, because the mean of its divisors is an integer number (2555687277000).

Almost surely, 2^{10221200200021} is an apocalyptic number.

It is an amenable number.

10221200200021 is a deficient number, since it is larger than the sum of its proper divisors (1548907979).

10221200200021 is an equidigital number, since it uses as much as digits as its factorization.

10221200200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548907978.

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

Adding to 10221200200021 its reverse (12000200212201), we get a palindrome (22221400412222).

The spelling of 10221200200021 in words is "ten trillion, two hundred twenty-one billion, two hundred million, two hundred thousand, twenty-one".