213210403411997 has 2 divisors, whose sum is σ = 213210403411998. Its totient is φ = 213210403411996.

The previous prime is 213210403411921. The next prime is 213210403412029. The reversal of 213210403411997 is 799114304012312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200045777212516 + 13164626199481 = 14143754^2 + 3628309^2 .

It is a cyclic number.

It is not a de Polignac number, because 213210403411997 - 2¹⁰ = 213210403410973 is a prime.

It is a super-2 number, since 2×213210403411997² (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 (213210403011997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106605201705998 + 106605201705999.

It is an arithmetic number, because the mean of its divisors is an integer number (106605201705999).

Almost surely, 2^{213210403411997} is an apocalyptic number.

It is an amenable number.

213210403411997 is a deficient number, since it is larger than the sum of its proper divisors (1).

213210403411997 is an equidigital number, since it uses as much as digits as its factorization.

213210403411997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 213210403411997 in words is "two hundred thirteen trillion, two hundred ten billion, four hundred three million, four hundred eleven thousand, nine hundred ninety-seven".