213411323032421 has 16 divisors (see below), whose sum is σ = 225092613807600. Its totient is φ = 202057161320448.

The previous prime is 213411323032399. The next prime is 213411323032469. The reversal of 213411323032421 is 124230323114312.

It can be written as a sum of positive squares in 8 ways, for example, as 10594959900100 + 202816363132321 = 3254990^2 + 14241361^2 .

It is a cyclic number.

It is not a de Polignac number, because 213411323032421 - 2⁶ = 213411323032357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213411323032021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347702990 + ... + 348316223.

It is an arithmetic number, because the mean of its divisors is an integer number (14068288362975).

Almost surely, 2^{213411323032421} is an apocalyptic number.

It is an amenable number.

213411323032421 is a deficient number, since it is larger than the sum of its proper divisors (11681290775179).

213411323032421 is a wasteful number, since it uses less digits than its factorization.

213411323032421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696019448.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 213411323032421 its reverse (124230323114312), we get a palindrome (337641646146733).

The spelling of 213411323032421 in words is "two hundred thirteen trillion, four hundred eleven billion, three hundred twenty-three million, thirty-two thousand, four hundred twenty-one".