4536011021 has 2 divisors, whose sum is σ = 4536011022. Its totient is φ = 4536011020.

The previous prime is 4536011003. The next prime is 4536011099. The reversal of 4536011021 is 1201106354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4517184100 + 18826921 = 67210^2 + 4339^2 .

It is a cyclic number.

It is not a de Polignac number, because 4536011021 - 2⁶ = 4536010957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4536011521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2268005510 + 2268005511.

It is an arithmetic number, because the mean of its divisors is an integer number (2268005511).

Almost surely, 2^4536011021 is an apocalyptic number.

It is an amenable number.

4536011021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4536011021 is an equidigital number, since it uses as much as digits as its factorization.

4536011021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 4536011021 is about 67349.9147809409. The cubic root of 4536011021 is about 1655.3558464847.

Adding to 4536011021 its reverse (1201106354), we get a palindrome (5737117375).

The spelling of 4536011021 in words is "four billion, five hundred thirty-six million, eleven thousand, twenty-one".