213122021107 has 2 divisors, whose sum is σ = 213122021108. Its totient is φ = 213122021106.

The previous prime is 213122021087. The next prime is 213122021111. The reversal of 213122021107 is 701120221312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213122021107 is a prime.

It is not a weakly prime, because it can be changed into another prime (213122421107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106561010553 + 106561010554.

It is an arithmetic number, because the mean of its divisors is an integer number (106561010554).

Almost surely, 2^213122021107 is an apocalyptic number.

213122021107 is a deficient number, since it is larger than the sum of its proper divisors (1).

213122021107 is an equidigital number, since it uses as much as digits as its factorization.

213122021107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 213122021107 its reverse (701120221312), we get a palindrome (914242242419).

The spelling of 213122021107 in words is "two hundred thirteen billion, one hundred twenty-two million, twenty-one thousand, one hundred seven".