213420340101029 has 2 divisors, whose sum is σ = 213420340101030. Its totient is φ = 213420340101028.

The previous prime is 213420340100971. The next prime is 213420340101077. The reversal of 213420340101029 is 920101043024312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158743040852929 + 54677299248100 = 12599327^2 + 7394410^2 .

It is a cyclic number.

It is not a de Polignac number, because 213420340101029 - 2¹² = 213420340096933 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 213420340100986 and 213420340101004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213420340101329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106710170050514 + 106710170050515.

It is an arithmetic number, because the mean of its divisors is an integer number (106710170050515).

Almost surely, 2^{213420340101029} is an apocalyptic number.

It is an amenable number.

213420340101029 is a deficient number, since it is larger than the sum of its proper divisors (1).

213420340101029 is an equidigital number, since it uses as much as digits as its factorization.

213420340101029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 213420340101029 in words is "two hundred thirteen trillion, four hundred twenty billion, three hundred forty million, one hundred one thousand, twenty-nine".