4002534225221 has 16 divisors (see below), whose sum is σ = 4693538131968. Its totient is φ = 3341606659200.

The previous prime is 4002534225203. The next prime is 4002534225229. The reversal of 4002534225221 is 1225224352004.

It is a cyclic number.

It is not a de Polignac number, because 4002534225221 - 2²⁶ = 4002467116357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002534225229) 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, 11199365 + ... + 11551226.

It is an arithmetic number, because the mean of its divisors is an integer number (293346133248).

Almost surely, 2^{4002534225221} is an apocalyptic number.

4002534225221 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4002534225221 is a deficient number, since it is larger than the sum of its proper divisors (691003906747).

4002534225221 is a wasteful number, since it uses less digits than its factorization.

4002534225221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22751252.

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 4002534225221 its reverse (1225224352004), we get a palindrome (5227758577225).

The spelling of 4002534225221 in words is "four trillion, two billion, five hundred thirty-four million, two hundred twenty-five thousand, two hundred twenty-one".