213211137278407 has 2 divisors, whose sum is σ = 213211137278408. Its totient is φ = 213211137278406.

The previous prime is 213211137278389. The next prime is 213211137278411. The reversal of 213211137278407 is 704872731112312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213211137278407 - 2¹¹ = 213211137276359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213211132278407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106605568639203 + 106605568639204.

It is an arithmetic number, because the mean of its divisors is an integer number (106605568639204).

Almost surely, 2^{213211137278407} is an apocalyptic number.

213211137278407 is a deficient number, since it is larger than the sum of its proper divisors (1).

213211137278407 is an equidigital number, since it uses as much as digits as its factorization.

213211137278407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 790272, while the sum is 49.

The spelling of 213211137278407 in words is "two hundred thirteen trillion, two hundred eleven billion, one hundred thirty-seven million, two hundred seventy-eight thousand, four hundred seven".