4125021302221 has 4 divisors (see below), whose sum is σ = 4165070052832. Its totient is φ = 4084972551612.

The previous prime is 4125021302197. The next prime is 4125021302291. The reversal of 4125021302221 is 1222031205214.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4125021302221 - 2⁷ = 4125021302093 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 (4125021302291) 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, 20024375151 + ... + 20024375356.

It is an arithmetic number, because the mean of its divisors is an integer number (1041267513208).

Almost surely, 2^{4125021302221} is an apocalyptic number.

It is an amenable number.

4125021302221 is a deficient number, since it is larger than the sum of its proper divisors (40048750611).

4125021302221 is a wasteful number, since it uses less digits than its factorization.

4125021302221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40048750610.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 4125021302221 its reverse (1222031205214), we get a palindrome (5347052507435).

The spelling of 4125021302221 in words is "four trillion, one hundred twenty-five billion, twenty-one million, three hundred two thousand, two hundred twenty-one".