21112233371 has 2 divisors, whose sum is σ = 21112233372. Its totient is φ = 21112233370.

The previous prime is 21112233367. The next prime is 21112233413. The reversal of 21112233371 is 17333221112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21112233371 - 2² = 21112233367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21112233371.

It is not a weakly prime, because it can be changed into another prime (21112233271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556116685 + 10556116686.

It is an arithmetic number, because the mean of its divisors is an integer number (10556116686).

Almost surely, 2^21112233371 is an apocalyptic number.

21112233371 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112233371 is an equidigital number, since it uses as much as digits as its factorization.

21112233371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 26.

Adding to 21112233371 its reverse (17333221112), we get a palindrome (38445454483).

The spelling of 21112233371 in words is "twenty-one billion, one hundred twelve million, two hundred thirty-three thousand, three hundred seventy-one".