1211441012 has 24 divisors (see below), whose sum is σ = 2322137160. Its totient is φ = 550430720.

The previous prime is 1211441009. The next prime is 1211441047. The reversal of 1211441012 is 2101441121.

It can be written as a sum of positive squares in 4 ways, for example, as 526886116 + 684554896 = 22954^2 + 26164^2 .

It is a super-3 number, since 3×1211441012³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305189 + ... + 309132.

It is an arithmetic number, because the mean of its divisors is an integer number (96755715).

Almost surely, 2^1211441012 is an apocalyptic number.

It is an amenable number.

1211441012 is a deficient number, since it is larger than the sum of its proper divisors (1110696148).

1211441012 is a wasteful number, since it uses less digits than its factorization.

1211441012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614371 (or 614369 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1211441012 is about 34805.7611897801. The cubic root of 1211441012 is about 1066.0250842716.

Adding to 1211441012 its reverse (2101441121), we get a palindrome (3312882133).

The spelling of 1211441012 in words is "one billion, two hundred eleven million, four hundred forty-one thousand, twelve".