1211303012 has 12 divisors (see below), whose sum is σ = 2121720300. Its totient is φ = 605097216.

The previous prime is 1211303011. The next prime is 1211303033. The reversal of 1211303012 is 2103031121.

It can be written as a sum of positive squares in 2 ways, for example, as 99480676 + 1111822336 = 9974^2 + 33344^2 .

It is not an unprimeable number, because it can be changed into a prime (1211303011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133637 + ... + 142412.

It is an arithmetic number, because the mean of its divisors is an integer number (176810025).

Almost surely, 2^1211303012 is an apocalyptic number.

It is an amenable number.

1211303012 is a deficient number, since it is larger than the sum of its proper divisors (910417288).

1211303012 is a wasteful number, since it uses less digits than its factorization.

1211303012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277150 (or 277148 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1211303012 is about 34803.7787028937. The cubic root of 1211303012 is about 1065.9846043675.

Adding to 1211303012 its reverse (2103031121), we get a palindrome (3314334133).

The spelling of 1211303012 in words is "one billion, two hundred eleven million, three hundred three thousand, twelve".