213333023129 has 2 divisors, whose sum is σ = 213333023130. Its totient is φ = 213333023128.

The previous prime is 213333023107. The next prime is 213333023161. The reversal of 213333023129 is 921320333312.

It is an a-pointer prime, because the next prime (213333023161) can be obtained adding 213333023129 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192503317504 + 20829705625 = 438752^2 + 144325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213333023129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213333023095 and 213333023104.

It is not a weakly prime, because it can be changed into another prime (213333323129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106666511564 + 106666511565.

It is an arithmetic number, because the mean of its divisors is an integer number (106666511565).

Almost surely, 2^213333023129 is an apocalyptic number.

It is an amenable number.

213333023129 is a deficient number, since it is larger than the sum of its proper divisors (1).

213333023129 is an equidigital number, since it uses as much as digits as its factorization.

213333023129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 32.

The spelling of 213333023129 in words is "two hundred thirteen billion, three hundred thirty-three million, twenty-three thousand, one hundred twenty-nine".