3912022121 has 4 divisors (see below), whose sum is σ = 4470882432. Its totient is φ = 3353161812.

The previous prime is 3912022117. The next prime is 3912022181. The reversal of 3912022121 is 1212202193.

It is a happy number.

3912022121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3912022121 - 2² = 3912022117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3912022181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279430145 + ... + 279430158.

It is an arithmetic number, because the mean of its divisors is an integer number (1117720608).

Almost surely, 2^3912022121 is an apocalyptic number.

It is an amenable number.

3912022121 is a deficient number, since it is larger than the sum of its proper divisors (558860311).

3912022121 is an equidigital number, since it uses as much as digits as its factorization.

3912022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558860310.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 3912022121 is about 62546.1599220927. The cubic root of 3912022121 is about 1575.6766550489.

The spelling of 3912022121 in words is "three billion, nine hundred twelve million, twenty-two thousand, one hundred twenty-one".