213100231430421 has 48 divisors (see below), whose sum is σ = 315275114868480. Its totient is φ = 138639696814080.

The previous prime is 213100231430369. The next prime is 213100231430423. The reversal of 213100231430421 is 124034132001312.

213100231430421 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 0 + 0 + 231 + 4 + 3 + 0 + 421 = 666.

It is not a de Polignac number, because 213100231430421 - 2⁹ = 213100231429909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213100231430423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2289163045 + ... + 2289256133.

It is an arithmetic number, because the mean of its divisors is an integer number (6568231559760).

Almost surely, 2^{213100231430421} is an apocalyptic number.

It is an amenable number.

213100231430421 is a deficient number, since it is larger than the sum of its proper divisors (102174883438059).

213100231430421 is a wasteful number, since it uses less digits than its factorization.

213100231430421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108826 (or 108823 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 213100231430421 its reverse (124034132001312), we get a palindrome (337134363431733).

The spelling of 213100231430421 in words is "two hundred thirteen trillion, one hundred billion, two hundred thirty-one million, four hundred thirty thousand, four hundred twenty-one".