212121034003357 has 2 divisors, whose sum is σ = 212121034003358. Its totient is φ = 212121034003356.

The previous prime is 212121034003349. The next prime is 212121034003381. The reversal of 212121034003357 is 753300430121212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211484335335001 + 636698668356 = 14542501^2 + 797934^2 .

It is a cyclic number.

It is not a de Polignac number, because 212121034003357 - 2³ = 212121034003349 is a prime.

It is a super-3 number, since 3×212121034003357³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212121034003057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060517001678 + 106060517001679.

It is an arithmetic number, because the mean of its divisors is an integer number (106060517001679).

Almost surely, 2^{212121034003357} is an apocalyptic number.

It is an amenable number.

212121034003357 is a deficient number, since it is larger than the sum of its proper divisors (1).

212121034003357 is an equidigital number, since it uses as much as digits as its factorization.

212121034003357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

Adding to 212121034003357 its reverse (753300430121212), we get a palindrome (965421464124569).

The spelling of 212121034003357 in words is "two hundred twelve trillion, one hundred twenty-one billion, thirty-four million, three thousand, three hundred fifty-seven".