125212311 has 32 divisors (see below), whose sum is σ = 214643200. Its totient is φ = 71541144.

The previous prime is 125212309. The next prime is 125212313. The reversal of 125212311 is 113212521.

It is an interprime number because it is at equal distance from previous prime (125212309) and next prime (125212313).

It is not a de Polignac number, because 125212311 - 2¹ = 125212309 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 (125212313) 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 31 ways as a sum of consecutive naturals, for example, 11220 + ... + 19398.

It is an arithmetic number, because the mean of its divisors is an integer number (6707600).

Almost surely, 2^125212311 is an apocalyptic number.

125212311 is a deficient number, since it is larger than the sum of its proper divisors (89430889).

125212311 is an frugal number, since it uses more digits than its factorization.

125212311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8207 (or 8189 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 125212311 is about 11189.8306957702. The cubic root of 125212311 is about 500.2829212143.

Adding to 125212311 its reverse (113212521), we get a palindrome (238424832).

The spelling of 125212311 in words is "one hundred twenty-five million, two hundred twelve thousand, three hundred eleven".