10202221112221 has 4 divisors (see below), whose sum is σ = 10216254429472. Its totient is φ = 10188187794972.

The previous prime is 10202221112197. The next prime is 10202221112263. The reversal of 10202221112221 is 12221112220201.

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 10202221112221 - 2¹³ = 10202221104029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202221112021) 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, 7016657535 + ... + 7016658988.

It is an arithmetic number, because the mean of its divisors is an integer number (2554063607368).

Almost surely, 2^{10202221112221} is an apocalyptic number.

It is an amenable number.

10202221112221 is a deficient number, since it is larger than the sum of its proper divisors (14033317251).

10202221112221 is an equidigital number, since it uses as much as digits as its factorization.

10202221112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14033317250.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 10202221112221 its reverse (12221112220201), we get a palindrome (22423333332422).

The spelling of 10202221112221 in words is "ten trillion, two hundred two billion, two hundred twenty-one million, one hundred twelve thousand, two hundred twenty-one".