2132555221 has 2 divisors, whose sum is σ = 2132555222. Its totient is φ = 2132555220.

The previous prime is 2132555203. The next prime is 2132555233. The reversal of 2132555221 is 1225552312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1156680100 + 975875121 = 34010^2 + 31239^2 .

It is a cyclic number.

It is not a de Polignac number, because 2132555221 - 2⁹ = 2132554709 is a prime.

It is a super-3 number, since 3×2132555221³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 2132555221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2132555251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066277610 + 1066277611.

It is an arithmetic number, because the mean of its divisors is an integer number (1066277611).

Almost surely, 2^2132555221 is an apocalyptic number.

It is an amenable number.

2132555221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2132555221 is an equidigital number, since it uses as much as digits as its factorization.

2132555221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6000, while the sum is 28.

The square root of 2132555221 is about 46179.5974538540. The cubic root of 2132555221 is about 1287.1626481087.

The spelling of 2132555221 in words is "two billion, one hundred thirty-two million, five hundred fifty-five thousand, two hundred twenty-one".