244133012021 has 4 divisors (see below), whose sum is σ = 258493777452. Its totient is φ = 229772246592.

The previous prime is 244133011979. The next prime is 244133012027. The reversal of 244133012021 is 120210331442.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 165719011396 + 78414000625 = 407086^2 + 280025^2 .

It is a cyclic number.

It is not a de Polignac number, because 244133012021 - 2⁶ = 244133011957 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 (244133012027) 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, 7180382690 + ... + 7180382723.

It is an arithmetic number, because the mean of its divisors is an integer number (64623444363).

Almost surely, 2^244133012021 is an apocalyptic number.

It is an amenable number.

244133012021 is a deficient number, since it is larger than the sum of its proper divisors (14360765431).

244133012021 is a wasteful number, since it uses less digits than its factorization.

244133012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14360765430.

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

Adding to 244133012021 its reverse (120210331442), we get a palindrome (364343343463).

The spelling of 244133012021 in words is "two hundred forty-four billion, one hundred thirty-three million, twelve thousand, twenty-one".