2122030921 has 2 divisors, whose sum is σ = 2122030922. Its totient is φ = 2122030920.

The previous prime is 2122030909. The next prime is 2122031011. The reversal of 2122030921 is 1290302212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2072525625 + 49505296 = 45525^2 + 7036^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122030921 - 2¹¹ = 2122028873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2122030892 and 2122030901.

It is not a weakly prime, because it can be changed into another prime (2122039921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061015460 + 1061015461.

It is an arithmetic number, because the mean of its divisors is an integer number (1061015461).

Almost surely, 2^2122030921 is an apocalyptic number.

It is an amenable number.

2122030921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122030921 is an equidigital number, since it uses as much as digits as its factorization.

2122030921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 2122030921 is about 46065.5068462293. The cubic root of 2122030921 is about 1285.0417446203.

The spelling of 2122030921 in words is "two billion, one hundred twenty-two million, thirty thousand, nine hundred twenty-one".