182447012021 has 4 divisors (see below), whose sum is σ = 183105665772. Its totient is φ = 181788358272.

The previous prime is 182447011969. The next prime is 182447012113. The reversal of 182447012021 is 120210744281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120210744281 = 146383 ⋅821207.

It can be written as a sum of positive squares in 2 ways, for example, as 123099231025 + 59347780996 = 350855^2 + 243614^2 .

It is a cyclic number.

It is not a de Polignac number, because 182447012021 - 2²⁶ = 182379903157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (182447015021) 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, 329326460 + ... + 329327013.

It is an arithmetic number, because the mean of its divisors is an integer number (45776416443).

Almost surely, 2^182447012021 is an apocalyptic number.

It is an amenable number.

182447012021 is a deficient number, since it is larger than the sum of its proper divisors (658653751).

182447012021 is an equidigital number, since it uses as much as digits as its factorization.

182447012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658653750.

The product of its (nonzero) digits is 7168, while the sum is 32.

The spelling of 182447012021 in words is "one hundred eighty-two billion, four hundred forty-seven million, twelve thousand, twenty-one".