10144233221 has 4 divisors (see below), whose sum is σ = 10153219500. Its totient is φ = 10135246944.

The previous prime is 10144233181. The next prime is 10144233223. The reversal of 10144233221 is 12233244101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12233244101 = 13 ⋅941018777.

It can be written as a sum of positive squares in 2 ways, for example, as 3336333121 + 6807900100 = 57761^2 + 82510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10144233221 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 (10144233223) 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, 4491446 + ... + 4493703.

It is an arithmetic number, because the mean of its divisors is an integer number (2538304875).

Almost surely, 2^10144233221 is an apocalyptic number.

It is an amenable number.

10144233221 is a deficient number, since it is larger than the sum of its proper divisors (8986279).

10144233221 is an equidigital number, since it uses as much as digits as its factorization.

10144233221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8986278.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 10144233221 its reverse (12233244101), we get a palindrome (22377477322).

The spelling of 10144233221 in words is "ten billion, one hundred forty-four million, two hundred thirty-three thousand, two hundred twenty-one".