3235122721 has 2 divisors, whose sum is σ = 3235122722. Its totient is φ = 3235122720.

The previous prime is 3235122719. The next prime is 3235122727. The reversal of 3235122721 is 1272215323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2329413696 + 905709025 = 48264^2 + 30095^2 .

It is a cyclic number.

It is not a de Polignac number, because 3235122721 - 2¹ = 3235122719 is a prime.

Together with 3235122719, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3235122721.

It is not a weakly prime, because it can be changed into another prime (3235122727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1617561360 + 1617561361.

It is an arithmetic number, because the mean of its divisors is an integer number (1617561361).

Almost surely, 2^3235122721 is an apocalyptic number.

It is an amenable number.

3235122721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3235122721 is an equidigital number, since it uses as much as digits as its factorization.

3235122721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 3235122721 is about 56878.1392188598. The cubic root of 3235122721 is about 1478.9843776232.

The spelling of 3235122721 in words is "three billion, two hundred thirty-five million, one hundred twenty-two thousand, seven hundred twenty-one".