1211007445 has 16 divisors (see below), whose sum is σ = 1460965248. Its totient is φ = 963651520.

The previous prime is 1211007397. The next prime is 1211007449. The reversal of 1211007445 is 5447001121.

It is not a de Polignac number, because 1211007445 - 2¹³ = 1210999253 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 (1211007449) 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 in 15 ways as a sum of consecutive naturals, for example, 1174080 + ... + 1175110.

It is an arithmetic number, because the mean of its divisors is an integer number (91310328).

Almost surely, 2^1211007445 is an apocalyptic number.

It is an amenable number.

1211007445 is a deficient number, since it is larger than the sum of its proper divisors (249957803).

1211007445 is a wasteful number, since it uses less digits than its factorization.

1211007445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2060.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 1211007445 is about 34799.5322526036. The cubic root of 1211007445 is about 1065.8978945742.

Adding to 1211007445 its reverse (5447001121), we get a palindrome (6658008566).

The spelling of 1211007445 in words is "one billion, two hundred eleven million, seven thousand, four hundred forty-five".