4250444544121 has 4 divisors (see below), whose sum is σ = 4254607566244. Its totient is φ = 4246281522000.

The previous prime is 4250444544103. The next prime is 4250444544133. The reversal of 4250444544121 is 1214454440524.

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 1969921724521 + 2280522819600 = 1403539^2 + 1510140^2 .

It is a cyclic number.

It is not a de Polignac number, because 4250444544121 - 2⁵ = 4250444544089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4250444544821) 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, 2081509530 + ... + 2081511571.

It is an arithmetic number, because the mean of its divisors is an integer number (1063651891561).

Almost surely, 2^{4250444544121} is an apocalyptic number.

It is an amenable number.

4250444544121 is a deficient number, since it is larger than the sum of its proper divisors (4163022123).

4250444544121 is a wasteful number, since it uses less digits than its factorization.

4250444544121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4163022122.

The product of its (nonzero) digits is 409600, while the sum is 40.

Adding to 4250444544121 its reverse (1214454440524), we get a palindrome (5464898984645).

The spelling of 4250444544121 in words is "four trillion, two hundred fifty billion, four hundred forty-four million, five hundred forty-four thousand, one hundred twenty-one".