4910221021 has 2 divisors, whose sum is σ = 4910221022. Its totient is φ = 4910221020.

The previous prime is 4910221003. The next prime is 4910221031. The reversal of 4910221021 is 1201220194.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2914812121 + 1995408900 = 53989^2 + 44670^2 .

It is a cyclic number.

It is not a de Polignac number, because 4910221021 - 2⁹ = 4910220509 is a prime.

It is a super-2 number, since 2×4910221021² = 48220540950140564882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4910220983 and 4910221001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4910221031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2455110510 + 2455110511.

It is an arithmetic number, because the mean of its divisors is an integer number (2455110511).

Almost surely, 2^4910221021 is an apocalyptic number.

It is an amenable number.

4910221021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4910221021 is an equidigital number, since it uses as much as digits as its factorization.

4910221021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 4910221021 is about 70072.9692606215. The cubic root of 4910221021 is about 1699.6794114037.

The spelling of 4910221021 in words is "four billion, nine hundred ten million, two hundred twenty-one thousand, twenty-one".