23211111061 has 2 divisors, whose sum is σ = 23211111062. Its totient is φ = 23211111060.

The previous prime is 23211111013. The next prime is 23211111127. The reversal of 23211111061 is 16011111232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21281266161 + 1929844900 = 145881^2 + 43930^2 .

It is a cyclic number.

It is not a de Polignac number, because 23211111061 - 2¹¹ = 23211109013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23211111361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605555530 + 11605555531.

It is an arithmetic number, because the mean of its divisors is an integer number (11605555531).

Almost surely, 2^23211111061 is an apocalyptic number.

It is an amenable number.

23211111061 is a deficient number, since it is larger than the sum of its proper divisors (1).

23211111061 is an equidigital number, since it uses as much as digits as its factorization.

23211111061 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 19.

Adding to 23211111061 its reverse (16011111232), we get a palindrome (39222222293).

The spelling of 23211111061 in words is "twenty-three billion, two hundred eleven million, one hundred eleven thousand, sixty-one".