213220541055225 has 96 divisors (see below), whose sum is σ = 384890734844928. Its totient is φ = 103294084320000.

The previous prime is 213220541055209. The next prime is 213220541055289. The reversal of 213220541055225 is 522550145022312.

213220541055225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213220541055225 - 2⁴ = 213220541055209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12232252260 + ... + 12232269690.

It is an arithmetic number, because the mean of its divisors is an integer number (4009278487968).

Almost surely, 2^{213220541055225} is an apocalyptic number.

213220541055225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213220541055225 is a deficient number, since it is larger than the sum of its proper divisors (171670193789703).

213220541055225 is a wasteful number, since it uses less digits than its factorization.

213220541055225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28879 (or 28874 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 39.

Adding to 213220541055225 its reverse (522550145022312), we get a palindrome (735770686077537).

The spelling of 213220541055225 in words is "two hundred thirteen trillion, two hundred twenty billion, five hundred forty-one million, fifty-five thousand, two hundred twenty-five".