32131200223121 has 2 divisors, whose sum is σ = 32131200223122. Its totient is φ = 32131200223120.

The previous prime is 32131200223097. The next prime is 32131200223219. The reversal of 32131200223121 is 12132200213123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23934207907600 + 8196992315521 = 4892260^2 + 2863039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32131200223121 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (32131200223021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16065600111560 + 16065600111561.

It is an arithmetic number, because the mean of its divisors is an integer number (16065600111561).

Almost surely, 2^{32131200223121} is an apocalyptic number.

It is an amenable number.

32131200223121 is a deficient number, since it is larger than the sum of its proper divisors (1).

32131200223121 is an equidigital number, since it uses as much as digits as its factorization.

32131200223121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 32131200223121 its reverse (12132200213123), we get a palindrome (44263400436244).

The spelling of 32131200223121 in words is "thirty-two trillion, one hundred thirty-one billion, two hundred million, two hundred twenty-three thousand, one hundred twenty-one".