213202123 has 2 divisors, whose sum is σ = 213202124. Its totient is φ = 213202122.

The previous prime is 213202109. The next prime is 213202153. The reversal of 213202123 is 321202312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213202123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213202097 and 213202106.

It is not a weakly prime, because it can be changed into another prime (213202153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106601061 + 106601062.

It is an arithmetic number, because the mean of its divisors is an integer number (106601062).

Almost surely, 2^213202123 is an apocalyptic number.

213202123 is a deficient number, since it is larger than the sum of its proper divisors (1).

213202123 is an equidigital number, since it uses as much as digits as its factorization.

213202123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 213202123 is about 14601.4424972329. The cubic root of 213202123 is about 597.3981063737.

Adding to 213202123 its reverse (321202312), we get a palindrome (534404435).

The spelling of 213202123 in words is "two hundred thirteen million, two hundred two thousand, one hundred twenty-three".