213000021307 has 2 divisors, whose sum is σ = 213000021308. Its totient is φ = 213000021306.

The previous prime is 213000021301. The next prime is 213000021337. The reversal of 213000021307 is 703120000312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213000021307 - 2¹⁹ = 212999497019 is a prime.

It is not a weakly prime, because it can be changed into another prime (213000021301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106500010653 + 106500010654.

It is an arithmetic number, because the mean of its divisors is an integer number (106500010654).

Almost surely, 2^213000021307 is an apocalyptic number.

213000021307 is a deficient number, since it is larger than the sum of its proper divisors (1).

213000021307 is an equidigital number, since it uses as much as digits as its factorization.

213000021307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 19.

Adding to 213000021307 its reverse (703120000312), we get a palindrome (916120021619).

The spelling of 213000021307 in words is "two hundred thirteen billion, twenty-one thousand, three hundred seven".