10023011221 has 4 divisors (see below), whose sum is σ = 10023797152. Its totient is φ = 10022225292.

The previous prime is 10023011191. The next prime is 10023011227. The reversal of 10023011221 is 12211032001.

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 10023011221 - 2⁵ = 10023011189 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 (10023011227) 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, 373515 + ... + 399448.

It is an arithmetic number, because the mean of its divisors is an integer number (2505949288).

Almost surely, 2^10023011221 is an apocalyptic number.

It is an amenable number.

10023011221 is a deficient number, since it is larger than the sum of its proper divisors (785931).

10023011221 is an equidigital number, since it uses as much as digits as its factorization.

10023011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785930.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10023011221 its reverse (12211032001), we get a palindrome (22234043222).

The spelling of 10023011221 in words is "ten billion, twenty-three million, eleven thousand, two hundred twenty-one".