213302102010421 has 2 divisors, whose sum is σ = 213302102010422. Its totient is φ = 213302102010420.

The previous prime is 213302102010401. The next prime is 213302102010461. The reversal of 213302102010421 is 124010201203312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211199689009521 + 2102413000900 = 14532711^2 + 1449970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213302102010421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213302102010392 and 213302102010401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213302102010401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106651051005210 + 106651051005211.

It is an arithmetic number, because the mean of its divisors is an integer number (106651051005211).

Almost surely, 2^{213302102010421} is an apocalyptic number.

It is an amenable number.

213302102010421 is a deficient number, since it is larger than the sum of its proper divisors (1).

213302102010421 is an equidigital number, since it uses as much as digits as its factorization.

213302102010421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 213302102010421 its reverse (124010201203312), we get a palindrome (337312303213733).

The spelling of 213302102010421 in words is "two hundred thirteen trillion, three hundred two billion, one hundred two million, ten thousand, four hundred twenty-one".