32121100189 has 2 divisors, whose sum is σ = 32121100190. Its totient is φ = 32121100188.

The previous prime is 32121100171. The next prime is 32121100241. The reversal of 32121100189 is 98100112123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16612632100 + 15508468089 = 128890^2 + 124533^2 .

It is a cyclic number.

It is not a de Polignac number, because 32121100189 - 2¹³ = 32121091997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32121100169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16060550094 + 16060550095.

It is an arithmetic number, because the mean of its divisors is an integer number (16060550095).

Almost surely, 2^32121100189 is an apocalyptic number.

It is an amenable number.

32121100189 is a deficient number, since it is larger than the sum of its proper divisors (1).

32121100189 is an equidigital number, since it uses as much as digits as its factorization.

32121100189 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 28.

The spelling of 32121100189 in words is "thirty-two billion, one hundred twenty-one million, one hundred thousand, one hundred eighty-nine".