1211012312 has 16 divisors (see below), whose sum is σ = 2280654360. Its totient is φ = 602837824.

The previous prime is 1211012269. The next prime is 1211012351. The reversal of 1211012312 is 2132101121.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 331613 + ... + 335244.

Almost surely, 2^1211012312 is an apocalyptic number.

It is an amenable number.

1211012312 is a deficient number, since it is larger than the sum of its proper divisors (1069642048).

1211012312 is a wasteful number, since it uses less digits than its factorization.

1211012312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667090 (or 667086 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1211012312 is about 34799.6021816342. The cubic root of 1211012312 is about 1065.8993225087.

Adding to 1211012312 its reverse (2132101121), we get a palindrome (3343113433).

The spelling of 1211012312 in words is "one billion, two hundred eleven million, twelve thousand, three hundred twelve".