10021132221 has 4 divisors (see below), whose sum is σ = 13361509632. Its totient is φ = 6680754812.

The previous prime is 10021132217. The next prime is 10021132267. The reversal of 10021132221 is 12223112001.

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 10021132221 - 2² = 10021132217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10021132221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021132271) 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, 1670188701 + ... + 1670188706.

It is an arithmetic number, because the mean of its divisors is an integer number (3340377408).

Almost surely, 2^10021132221 is an apocalyptic number.

It is an amenable number.

10021132221 is a deficient number, since it is larger than the sum of its proper divisors (3340377411).

10021132221 is an equidigital number, since it uses as much as digits as its factorization.

10021132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340377410.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 10021132221 its reverse (12223112001), we get a palindrome (22244244222).

The spelling of 10021132221 in words is "ten billion, twenty-one million, one hundred thirty-two thousand, two hundred twenty-one".