4201252144221 has 24 divisors (see below), whose sum is σ = 6157324448352. Its totient is φ = 2546164852000.

The previous prime is 4201252144211. The next prime is 4201252144249. The reversal of 4201252144221 is 1224412521024.

It is not a de Polignac number, because 4201252144221 - 2¹⁷ = 4201252013149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4201252144211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31029571 + ... + 31164671.

It is an arithmetic number, because the mean of its divisors is an integer number (256555185348).

Almost surely, 2^{4201252144221} is an apocalyptic number.

It is an amenable number.

4201252144221 is a deficient number, since it is larger than the sum of its proper divisors (1956072304131).

4201252144221 is a wasteful number, since it uses less digits than its factorization.

4201252144221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220793 (or 220782 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

Adding to 4201252144221 its reverse (1224412521024), we get a palindrome (5425664665245).

The spelling of 4201252144221 in words is "four trillion, two hundred one billion, two hundred fifty-two million, one hundred forty-four thousand, two hundred twenty-one".