4121632121 has 2 divisors, whose sum is σ = 4121632122. Its totient is φ = 4121632120.

The previous prime is 4121632091. The next prime is 4121632129. The reversal of 4121632121 is 1212361214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4094592121 + 27040000 = 63989^2 + 5200^2 .

It is a cyclic number.

It is not a de Polignac number, because 4121632121 - 2¹⁴ = 4121615737 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (4121632129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2060816060 + 2060816061.

It is an arithmetic number, because the mean of its divisors is an integer number (2060816061).

Almost surely, 2^4121632121 is an apocalyptic number.

It is an amenable number.

4121632121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4121632121 is an equidigital number, since it uses as much as digits as its factorization.

4121632121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 4121632121 is about 64199.9386370423. The cubic root of 4121632121 is about 1603.3305779761.

Adding to 4121632121 its reverse (1212361214), we get a palindrome (5333993335).

It can be divided in two parts, 41216 and 32121, that added together give a palindrome (73337).

The spelling of 4121632121 in words is "four billion, one hundred twenty-one million, six hundred thirty-two thousand, one hundred twenty-one".