103212251 has 2 divisors, whose sum is σ = 103212252. Its totient is φ = 103212250.

The previous prime is 103212229. The next prime is 103212259. The reversal of 103212251 is 152212301.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (152212301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103212251 - 2¹⁴ = 103195867 is a prime.

It is not a weakly prime, because it can be changed into another prime (103212259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51606125 + 51606126.

It is an arithmetic number, because the mean of its divisors is an integer number (51606126).

Almost surely, 2^103212251 is an apocalyptic number.

103212251 is a deficient number, since it is larger than the sum of its proper divisors (1).

103212251 is an equidigital number, since it uses as much as digits as its factorization.

103212251 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 17.

The square root of 103212251 is about 10159.3430397836. The cubic root of 103212251 is about 469.0765798607.

Adding to 103212251 its reverse (152212301), we get a palindrome (255424552).

Subtracting 103212251 from its reverse (152212301), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 103212251 in words is "one hundred three million, two hundred twelve thousand, two hundred fifty-one".