32121020989 has 2 divisors, whose sum is σ = 32121020990. Its totient is φ = 32121020988.

The previous prime is 32121020983. The next prime is 32121020993. The reversal of 32121020989 is 98902012123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25855032025 + 6265988964 = 160795^2 + 79158^2 .

It is a cyclic number.

It is not a de Polignac number, because 32121020989 - 2²⁵ = 32087466557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32121020983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16060510494 + 16060510495.

It is an arithmetic number, because the mean of its divisors is an integer number (16060510495).

Almost surely, 2^32121020989 is an apocalyptic number.

It is an amenable number.

32121020989 is a deficient number, since it is larger than the sum of its proper divisors (1).

32121020989 is an equidigital number, since it uses as much as digits as its factorization.

32121020989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

It can be divided in two parts, 3212 and 1020989, that added together give a palindrome (1024201).

The spelling of 32121020989 in words is "thirty-two billion, one hundred twenty-one million, twenty thousand, nine hundred eighty-nine".