2193229021 has 2 divisors, whose sum is σ = 2193229022. Its totient is φ = 2193229020.

The previous prime is 2193229001. The next prime is 2193229111. The reversal of 2193229021 is 1209223912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1868832900 + 324396121 = 43230^2 + 18011^2 .

It is a cyclic number.

It is not a de Polignac number, because 2193229021 - 2⁹ = 2193228509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2193229001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1096614510 + 1096614511.

It is an arithmetic number, because the mean of its divisors is an integer number (1096614511).

Almost surely, 2^2193229021 is an apocalyptic number.

It is an amenable number.

2193229021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2193229021 is an equidigital number, since it uses as much as digits as its factorization.

2193229021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 2193229021 is about 46831.9230973916. The cubic root of 2193229021 is about 1299.2557912051.

The spelling of 2193229021 in words is "two billion, one hundred ninety-three million, two hundred twenty-nine thousand, twenty-one".