4911213921 has 16 divisors (see below), whose sum is σ = 6604392960. Its totient is φ = 3246209280.

The previous prime is 4911213863. The next prime is 4911213941. The reversal of 4911213921 is 1293121194.

It is not a de Polignac number, because 4911213921 - 2¹⁷ = 4911082849 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4911213941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150736 + ... + 180398.

It is an arithmetic number, because the mean of its divisors is an integer number (412774560).

Almost surely, 2^4911213921 is an apocalyptic number.

It is an amenable number.

4911213921 is a deficient number, since it is larger than the sum of its proper divisors (1693179039).

4911213921 is a wasteful number, since it uses less digits than its factorization.

4911213921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30136.

The product of its digits is 3888, while the sum is 33.

The square root of 4911213921 is about 70080.0536600822. The cubic root of 4911213921 is about 1699.7939682259.

The spelling of 4911213921 in words is "four billion, nine hundred eleven million, two hundred thirteen thousand, nine hundred twenty-one".