1211151234 has 32 divisors (see below), whose sum is σ = 2483732160. Its totient is φ = 393497600.

The previous prime is 1211151217. The next prime is 1211151251. The reversal of 1211151234 is 4321511121.

It is an interprime number because it is at equal distance from previous prime (1211151217) and next prime (1211151251).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211151234.

It is an unprimeable number.

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, 396754 + ... + 399794.

It is an arithmetic number, because the mean of its divisors is an integer number (77616630).

Almost surely, 2^1211151234 is an apocalyptic number.

1211151234 is an abundant number, since it is smaller than the sum of its proper divisors (1272580926).

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

1211151234 is a wasteful number, since it uses less digits than its factorization.

1211151234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4706.

The product of its digits is 240, while the sum is 21.

The square root of 1211151234 is about 34801.5981529584. The cubic root of 1211151234 is about 1065.9400793759.

Adding to 1211151234 its reverse (4321511121), we get a palindrome (5532662355).

The spelling of 1211151234 in words is "one billion, two hundred eleven million, one hundred fifty-one thousand, two hundred thirty-four".