32001231121 has 2 divisors, whose sum is σ = 32001231122. Its totient is φ = 32001231120.

The previous prime is 32001231109. The next prime is 32001231139. The reversal of 32001231121 is 12113210023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20984419600 + 11016811521 = 144860^2 + 104961^2 .

It is a cyclic number.

It is not a de Polignac number, because 32001231121 - 2⁷ = 32001230993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32001231095 and 32001231104.

It is not a weakly prime, because it can be changed into another prime (32001231151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16000615560 + 16000615561.

It is an arithmetic number, because the mean of its divisors is an integer number (16000615561).

Almost surely, 2^32001231121 is an apocalyptic number.

It is an amenable number.

32001231121 is a deficient number, since it is larger than the sum of its proper divisors (1).

32001231121 is an equidigital number, since it uses as much as digits as its factorization.

32001231121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 32001231121 its reverse (12113210023), we get a palindrome (44114441144).

It can be divided in two parts, 3200 and 1231121, that added together give a palindrome (1234321).

The spelling of 32001231121 in words is "thirty-two billion, one million, two hundred thirty-one thousand, one hundred twenty-one".