21112032311 has 2 divisors, whose sum is σ = 21112032312. Its totient is φ = 21112032310.

The previous prime is 21112032259. The next prime is 21112032341. The reversal of 21112032311 is 11323021112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21112032311 - 2¹⁰ = 21112031287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21112032311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21112032341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556016155 + 10556016156.

It is an arithmetic number, because the mean of its divisors is an integer number (10556016156).

Almost surely, 2^21112032311 is an apocalyptic number.

21112032311 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112032311 is an equidigital number, since it uses as much as digits as its factorization.

21112032311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21112032311 its reverse (11323021112), we get a palindrome (32435053423).

The spelling of 21112032311 in words is "twenty-one billion, one hundred twelve million, thirty-two thousand, three hundred eleven".