192012521 has 2 divisors, whose sum is σ = 192012522. Its totient is φ = 192012520.

The previous prime is 192012511. The next prime is 192012523. The reversal of 192012521 is 125210291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173185600 + 18826921 = 13160^2 + 4339^2 .

It is an emirp because it is prime and its reverse (125210291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 192012521 - 2¹⁴ = 191996137 is a prime.

Together with 192012523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (192012523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96006260 + 96006261.

It is an arithmetic number, because the mean of its divisors is an integer number (96006261).

Almost surely, 2^192012521 is an apocalyptic number.

It is an amenable number.

192012521 is a deficient number, since it is larger than the sum of its proper divisors (1).

192012521 is an equidigital number, since it uses as much as digits as its factorization.

192012521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 192012521 is about 13856.8582658552. The cubic root of 192012521 is about 576.9123684107.

It can be divided in two parts, 1920 and 12521, that added together give a palindrome (14441).

The spelling of 192012521 in words is "one hundred ninety-two million, twelve thousand, five hundred twenty-one".