2920213921 has 2 divisors, whose sum is σ = 2920213922. Its totient is φ = 2920213920.

The previous prime is 2920213859. The next prime is 2920213969. The reversal of 2920213921 is 1293120292.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2920213521 + 400 = 54039^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 2920213921 - 2²⁹ = 2383343009 is a prime.

It is not a weakly prime, because it can be changed into another prime (2920213991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1460106960 + 1460106961.

It is an arithmetic number, because the mean of its divisors is an integer number (1460106961).

Almost surely, 2^2920213921 is an apocalyptic number.

It is an amenable number.

2920213921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2920213921 is an equidigital number, since it uses as much as digits as its factorization.

2920213921 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2920213921 is about 54039.0037010306. The cubic root of 2920213921 is about 1429.3488030498.

The spelling of 2920213921 in words is "two billion, nine hundred twenty million, two hundred thirteen thousand, nine hundred twenty-one".