212203521454 has 16 divisors (see below), whose sum is σ = 319804531200. Its totient is φ = 105602225400.

The previous prime is 212203521451. The next prime is 212203521457. The reversal of 212203521454 is 454125302212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212203521451) and next prime (212203521457).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212203521451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2023197 + ... + 2125495.

It is an arithmetic number, because the mean of its divisors is an integer number (19987783200).

Almost surely, 2^212203521454 is an apocalyptic number.

212203521454 is a deficient number, since it is larger than the sum of its proper divisors (107601009746).

212203521454 is a wasteful number, since it uses less digits than its factorization.

212203521454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107175.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 212203521454 its reverse (454125302212), we get a palindrome (666328823666).

The spelling of 212203521454 in words is "two hundred twelve billion, two hundred three million, five hundred twenty-one thousand, four hundred fifty-four".