1211043652 has 24 divisors (see below), whose sum is σ = 2608402496. Its totient is φ = 479094048.

The previous prime is 1211043623. The next prime is 1211043667. The reversal of 1211043652 is 2563401121.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 1663158 + ... + 1663885.

Almost surely, 2^1211043652 is an apocalyptic number.

It is an amenable number.

1211043652 is an abundant number, since it is smaller than the sum of its proper divisors (1397358844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211043652 is a wasteful number, since it uses less digits than its factorization.

1211043652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3327067 (or 3327065 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1211043652 is about 34800.0524712248. The cubic root of 1211043652 is about 1065.9085172946.

Adding to 1211043652 its reverse (2563401121), we get a palindrome (3774444773).

The spelling of 1211043652 in words is "one billion, two hundred eleven million, forty-three thousand, six hundred fifty-two".