107212445 has 4 divisors (see below), whose sum is σ = 128654940. Its totient is φ = 85769952.

The previous prime is 107212423. The next prime is 107212447. The reversal of 107212445 is 544212701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544212701 = 673 ⋅808637.

It can be written as a sum of positive squares in 2 ways, for example, as 59505796 + 47706649 = 7714^2 + 6907^2 .

It is a cyclic number.

It is not a de Polignac number, because 107212445 - 2¹⁸ = 106950301 is a prime.

It is a super-2 number, since 2×107212445² = 22989016725756050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107212447) 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 3 ways as a sum of consecutive naturals, for example, 10721240 + ... + 10721249.

It is an arithmetic number, because the mean of its divisors is an integer number (32163735).

Almost surely, 2^107212445 is an apocalyptic number.

It is an amenable number.

107212445 is a deficient number, since it is larger than the sum of its proper divisors (21442495).

107212445 is an equidigital number, since it uses as much as digits as its factorization.

107212445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21442494.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 107212445 is about 10354.3442573637. The cubic root of 107212445 is about 475.0599296499.

The spelling of 107212445 in words is "one hundred seven million, two hundred twelve thousand, four hundred forty-five".