211321131112430 has 64 divisors (see below), whose sum is σ = 386797327902720. Its totient is φ = 83108643340800.

The previous prime is 211321131112393. The next prime is 211321131112439. The reversal of 211321131112430 is 34211131123112.

It is a self number, because there is not a number n which added to its sum of digits gives 211321131112430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211321131112439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 823026470 + ... + 823283190.

It is an arithmetic number, because the mean of its divisors is an integer number (6043708248480).

Almost surely, 2^{211321131112430} is an apocalyptic number.

211321131112430 is a deficient number, since it is larger than the sum of its proper divisors (175476196790290).

211321131112430 is a wasteful number, since it uses less digits than its factorization.

211321131112430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259985.

The product of its (nonzero) digits is 864, while the sum is 26.

Adding to 211321131112430 its reverse (34211131123112), we get a palindrome (245532262235542).

The spelling of 211321131112430 in words is "two hundred eleven trillion, three hundred twenty-one billion, one hundred thirty-one million, one hundred twelve thousand, four hundred thirty".