152203021 has 2 divisors, whose sum is σ = 152203022. Its totient is φ = 152203020.

The previous prime is 152203019. The next prime is 152203033. The reversal of 152203021 is 120302251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118504996 + 33698025 = 10886^2 + 5805^2 .

It is a cyclic number.

It is not a de Polignac number, because 152203021 - 2¹ = 152203019 is a prime.

Together with 152203019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 152202986 and 152203004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152200021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76101510 + 76101511.

It is an arithmetic number, because the mean of its divisors is an integer number (76101511).

Almost surely, 2^152203021 is an apocalyptic number.

It is an amenable number.

152203021 is a deficient number, since it is larger than the sum of its proper divisors (1).

152203021 is an equidigital number, since it uses as much as digits as its factorization.

152203021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 152203021 is about 12337.0588472294. The cubic root of 152203021 is about 533.9178299878.

Adding to 152203021 its reverse (120302251), we get a palindrome (272505272).

The spelling of 152203021 in words is "one hundred fifty-two million, two hundred three thousand, twenty-one".