32111212261 has 2 divisors, whose sum is σ = 32111212262. Its totient is φ = 32111212260.

The previous prime is 32111212183. The next prime is 32111212277. The reversal of 32111212261 is 16221211123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30278088036 + 1833124225 = 174006^2 + 42815^2 .

It is a cyclic number.

It is not a de Polignac number, because 32111212261 - 2³³ = 23521277669 is a prime.

It is a super-2 number, since 2×32111212261² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32111212291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16055606130 + 16055606131.

It is an arithmetic number, because the mean of its divisors is an integer number (16055606131).

Almost surely, 2^32111212261 is an apocalyptic number.

It is an amenable number.

32111212261 is a deficient number, since it is larger than the sum of its proper divisors (1).

32111212261 is an equidigital number, since it uses as much as digits as its factorization.

32111212261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 22.

Adding to 32111212261 its reverse (16221211123), we get a palindrome (48332423384).

The spelling of 32111212261 in words is "thirty-two billion, one hundred eleven million, two hundred twelve thousand, two hundred sixty-one".