212203553 has 2 divisors, whose sum is σ = 212203554. Its totient is φ = 212203552.

The previous prime is 212203531. The next prime is 212203561. The reversal of 212203553 is 355302212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136025569 + 76177984 = 11663^2 + 8728^2 .

It is a cyclic number.

It is not a de Polignac number, because 212203553 - 2⁸ = 212203297 is a prime.

It is not a weakly prime, because it can be changed into another prime (212203583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106101776 + 106101777.

It is an arithmetic number, because the mean of its divisors is an integer number (106101777).

Almost surely, 2^212203553 is an apocalyptic number.

It is an amenable number.

212203553 is a deficient number, since it is larger than the sum of its proper divisors (1).

212203553 is an equidigital number, since it uses as much as digits as its factorization.

212203553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 212203553 is about 14567.2081402031. The cubic root of 212203553 is about 596.4639730901.

Adding to 212203553 its reverse (355302212), we get a palindrome (567505765).

The spelling of 212203553 in words is "two hundred twelve million, two hundred three thousand, five hundred fifty-three".