2187201223 has 2 divisors, whose sum is σ = 2187201224. Its totient is φ = 2187201222.

The previous prime is 2187201173. The next prime is 2187201227. The reversal of 2187201223 is 3221027812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2187201223 - 2¹³ = 2187193031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2187201191 and 2187201200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2187201227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093600611 + 1093600612.

It is an arithmetic number, because the mean of its divisors is an integer number (1093600612).

Almost surely, 2^2187201223 is an apocalyptic number.

2187201223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2187201223 is an equidigital number, since it uses as much as digits as its factorization.

2187201223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 2187201223 is about 46767.5231651196. The cubic root of 2187201223 is about 1298.0644219029.

The spelling of 2187201223 in words is "two billion, one hundred eighty-seven million, two hundred one thousand, two hundred twenty-three".