1211240034 has 32 divisors (see below), whose sum is σ = 2735777280. Its totient is φ = 397126800.

The previous prime is 1211240033. The next prime is 1211240047. The reversal of 1211240034 is 4300421121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1211239989 and 1211240016.

It is not an unprimeable number, because it can be changed into a prime (1211240033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180562 + ... + 187149.

It is an arithmetic number, because the mean of its divisors is an integer number (85493040).

Almost surely, 2^1211240034 is an apocalyptic number.

1211240034 is an abundant number, since it is smaller than the sum of its proper divisors (1524537246).

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

1211240034 is a wasteful number, since it uses less digits than its factorization.

1211240034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367783 (or 367777 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1211240034 is about 34802.8739330533. The cubic root of 1211240034 is about 1065.9661298429.

Adding to 1211240034 its reverse (4300421121), we get a palindrome (5511661155).

The spelling of 1211240034 in words is "one billion, two hundred eleven million, two hundred forty thousand, thirty-four".