2213206566125 has 8 divisors (see below), whose sum is σ = 2762081794680. Its totient is φ = 1770565252800.

The previous prime is 2213206566119. The next prime is 2213206566127. The reversal of 2213206566125 is 5216656023122.

It can be written as a sum of positive squares in 4 ways, for example, as 30088024681 + 2183118541444 = 173459^2 + 1477538^2 .

It is not a de Polignac number, because 2213206566125 - 2¹⁸ = 2213206303981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213206566127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8852826140 + ... + 8852826389.

It is an arithmetic number, because the mean of its divisors is an integer number (345260224335).

Almost surely, 2^{2213206566125} is an apocalyptic number.

2213206566125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2213206566125 is a deficient number, since it is larger than the sum of its proper divisors (548875228555).

2213206566125 is an equidigital number, since it uses as much as digits as its factorization.

2213206566125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17705652544 (or 17705652534 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 2213206566125 in words is "two trillion, two hundred thirteen billion, two hundred six million, five hundred sixty-six thousand, one hundred twenty-five".