4212092921 has 4 divisors (see below), whose sum is σ = 4221230244. Its totient is φ = 4202955600.

The previous prime is 4212092909. The next prime is 4212092923. The reversal of 4212092921 is 1292902124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3120451321 + 1091641600 = 55861^2 + 33040^2 .

It is a cyclic number.

It is not a de Polignac number, because 4212092921 - 2¹⁴ = 4212076537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4212092923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4567970 + ... + 4568891.

It is an arithmetic number, because the mean of its divisors is an integer number (1055307561).

Almost surely, 2^4212092921 is an apocalyptic number.

It is an amenable number.

4212092921 is a deficient number, since it is larger than the sum of its proper divisors (9137323).

4212092921 is an equidigital number, since it uses as much as digits as its factorization.

4212092921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9137322.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 4212092921 is about 64900.6388335277. The cubic root of 4212092921 is about 1614.9756594529.

The spelling of 4212092921 in words is "four billion, two hundred twelve million, ninety-two thousand, nine hundred twenty-one".