47112021 has 12 divisors (see below), whose sum is σ = 74237280. Its totient is φ = 28552680.

The previous prime is 47112017. The next prime is 47112029. The reversal of 47112021 is 12021174.

It is not a de Polignac number, because 47112021 - 2² = 47112017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47111985 and 47112003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47112029) 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 in 11 ways as a sum of consecutive naturals, for example, 237841 + ... + 238038.

It is an arithmetic number, because the mean of its divisors is an integer number (6186440).

Almost surely, 2^47112021 is an apocalyptic number.

It is an amenable number.

47112021 is a deficient number, since it is larger than the sum of its proper divisors (27125259).

47112021 is a wasteful number, since it uses less digits than its factorization.

47112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475896 (or 475893 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 47112021 is about 6863.8197091707. The cubic root of 47112021 is about 361.1690928032.

Adding to 47112021 its reverse (12021174), we get a palindrome (59133195).

The spelling of 47112021 in words is "forty-seven million, one hundred twelve thousand, twenty-one".