221525035106020 has 12 divisors (see below), whose sum is σ = 465202573722684. Its totient is φ = 88610014042400.

The previous prime is 221525035105999. The next prime is 221525035106041. The reversal of 221525035106020 is 20601530525122.

It is an interprime number because it is at equal distance from previous prime (221525035105999) and next prime (221525035106041).

It can be written as a sum of positive squares in 2 ways, for example, as 33178890252544 + 188346144853476 = 5760112^2 + 13723926^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5538125877631 + ... + 5538125877670.

It is an arithmetic number, because the mean of its divisors is an integer number (38766881143557).

Almost surely, 2^{221525035106020} is an apocalyptic number.

221525035106020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221525035106020 is an abundant number, since it is smaller than the sum of its proper divisors (243677538616664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221525035106020 is a wasteful number, since it uses less digits than its factorization.

221525035106020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11076251755310 (or 11076251755308 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 221525035106020 in words is "two hundred twenty-one trillion, five hundred twenty-five billion, thirty-five million, one hundred six thousand, twenty".