4192112921 has 2 divisors, whose sum is σ = 4192112922. Its totient is φ = 4192112920.

The previous prime is 4192112891. The next prime is 4192112941. The reversal of 4192112921 is 1292112914.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2553887296 + 1638225625 = 50536^2 + 40475^2 .

It is a cyclic number.

It is not a de Polignac number, because 4192112921 - 2¹⁸ = 4191850777 is a prime.

It is not a weakly prime, because it can be changed into another prime (4192112941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2096056460 + 2096056461.

It is an arithmetic number, because the mean of its divisors is an integer number (2096056461).

Almost surely, 2^4192112921 is an apocalyptic number.

It is an amenable number.

4192112921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4192112921 is an equidigital number, since it uses as much as digits as its factorization.

4192112921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 32.

The square root of 4192112921 is about 64746.5282544169. The cubic root of 4192112921 is about 1612.4180735653.

The spelling of 4192112921 in words is "four billion, one hundred ninety-two million, one hundred twelve thousand, nine hundred twenty-one".