244420121140213 has 8 divisors (see below), whose sum is σ = 244487405571480. Its totient is φ = 244352838935040.

The previous prime is 244420121140183. The next prime is 244420121140219. The reversal of 244420121140213 is 312041121024442.

It can be written as a sum of positive squares in 4 ways, for example, as 173133964009444 + 71286157130769 = 13158038^2 + 8443113^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244420121140213 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 (244420121140219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232447981 + ... + 233497117.

It is an arithmetic number, because the mean of its divisors is an integer number (30560925696435).

Almost surely, 2^{244420121140213} is an apocalyptic number.

It is an amenable number.

244420121140213 is a deficient number, since it is larger than the sum of its proper divisors (67284431267).

244420121140213 is a wasteful number, since it uses less digits than its factorization.

244420121140213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113047.

The product of its (nonzero) digits is 12288, while the sum is 31.

Adding to 244420121140213 its reverse (312041121024442), we get a palindrome (556461242164655).

The spelling of 244420121140213 in words is "two hundred forty-four trillion, four hundred twenty billion, one hundred twenty-one million, one hundred forty thousand, two hundred thirteen".