10204112221 has 4 divisors (see below), whose sum is σ = 10205368000. Its totient is φ = 10202856444.

The previous prime is 10204112197. The next prime is 10204112251. The reversal of 10204112221 is 12221140201.

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 10204112221 - 2⁵ = 10204112189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10204112195 and 10204112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10204112251) 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, 615621 + ... + 631978.

It is an arithmetic number, because the mean of its divisors is an integer number (2551342000).

Almost surely, 2^10204112221 is an apocalyptic number.

It is an amenable number.

10204112221 is a deficient number, since it is larger than the sum of its proper divisors (1255779).

10204112221 is an equidigital number, since it uses as much as digits as its factorization.

10204112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255778.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10204112221 its reverse (12221140201), we get a palindrome (22425252422).

The spelling of 10204112221 in words is "ten billion, two hundred four million, one hundred twelve thousand, two hundred twenty-one".