4012252520221 has 16 divisors (see below), whose sum is σ = 4385434065408. Its totient is φ = 3640479552000.

The previous prime is 4012252520153. The next prime is 4012252520279. The reversal of 4012252520221 is 1220252522104.

It is a cyclic number.

It is not a de Polignac number, because 4012252520221 - 2⁷ = 4012252520093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4012252520221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4012252520291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24442821 + ... + 24606421.

It is an arithmetic number, because the mean of its divisors is an integer number (274089629088).

Almost surely, 2^{4012252520221} is an apocalyptic number.

It is an amenable number.

4012252520221 is a deficient number, since it is larger than the sum of its proper divisors (373181545187).

4012252520221 is a wasteful number, since it uses less digits than its factorization.

4012252520221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167892.

The product of its (nonzero) digits is 6400, while the sum is 28.

The spelling of 4012252520221 in words is "four trillion, twelve billion, two hundred fifty-two million, five hundred twenty thousand, two hundred twenty-one".