213321101124431 has 16 divisors (see below), whose sum is σ = 226529714080800. Its totient is φ = 200186219455488.

The previous prime is 213321101124353. The next prime is 213321101124437. The reversal of 213321101124431 is 134421101123312.

It is a cyclic number.

It is not a de Polignac number, because 213321101124431 - 2¹⁴ = 213321101108047 is a prime.

It is a super-2 number, since 2×213321101124431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213321101124394 and 213321101124403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213321101124437) 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, 13127555 + ... + 24473963.

It is an arithmetic number, because the mean of its divisors is an integer number (14158107130050).

Almost surely, 2^{213321101124431} is an apocalyptic number.

213321101124431 is a deficient number, since it is larger than the sum of its proper divisors (13208612956369).

213321101124431 is a wasteful number, since it uses less digits than its factorization.

213321101124431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11349658.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 213321101124431 its reverse (134421101123312), we get a palindrome (347742202247743).

The spelling of 213321101124431 in words is "two hundred thirteen trillion, three hundred twenty-one billion, one hundred one million, one hundred twenty-four thousand, four hundred thirty-one".