212451000203437 has 2 divisors, whose sum is σ = 212451000203438. Its totient is φ = 212451000203436.

The previous prime is 212451000203417. The next prime is 212451000203447. The reversal of 212451000203437 is 734302000154212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204163775610921 + 8287224592516 = 14288589^2 + 2878754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212451000203437 is a prime.

It is a super-2 number, since 2×212451000203437² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212451000203417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106225500101718 + 106225500101719.

It is an arithmetic number, because the mean of its divisors is an integer number (106225500101719).

Almost surely, 2^{212451000203437} is an apocalyptic number.

It is an amenable number.

212451000203437 is a deficient number, since it is larger than the sum of its proper divisors (1).

212451000203437 is an equidigital number, since it uses as much as digits as its factorization.

212451000203437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 34.

Adding to 212451000203437 its reverse (734302000154212), we get a palindrome (946753000357649).

The spelling of 212451000203437 in words is "two hundred twelve trillion, four hundred fifty-one billion, two hundred three thousand, four hundred thirty-seven".