1211003212 has 24 divisors (see below), whose sum is σ = 2132071200. Its totient is φ = 601852416.

The previous prime is 1211003207. The next prime is 1211003267. The reversal of 1211003212 is 2123001121.

It is a junction number, because it is equal to n+sod(n) for n = 1211003192 and 1211003201.

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 7 ways as a sum of consecutive naturals, for example, 505714 + ... + 508102.

It is an arithmetic number, because the mean of its divisors is an integer number (88836300).

Almost surely, 2^1211003212 is an apocalyptic number.

It is an amenable number.

1211003212 is a deficient number, since it is larger than the sum of its proper divisors (921067988).

1211003212 is a wasteful number, since it uses less digits than its factorization.

1211003212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105 (or 3103 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1211003212 is about 34799.4714327675. The cubic root of 1211003212 is about 1065.8966526465.

Adding to 1211003212 its reverse (2123001121), we get a palindrome (3334004333).

The spelling of 1211003212 in words is "one billion, two hundred eleven million, three thousand, two hundred twelve".