1211130468 has 72 divisors (see below), whose sum is σ = 3193051680. Its totient is φ = 401397120.

The previous prime is 1211130467. The next prime is 1211130563. The reversal of 1211130468 is 8640311121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1211130463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170508 + ... + 177468.

It is an arithmetic number, because the mean of its divisors is an integer number (44347940).

Almost surely, 2^1211130468 is an apocalyptic number.

1211130468 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211130468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1596525840).

1211130468 is an abundant number, since it is smaller than the sum of its proper divisors (1981921212).

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

1211130468 is a wasteful number, since it uses less digits than its factorization.

1211130468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7159 (or 7145 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1211130468 is about 34801.2998033119. The cubic root of 1211130468 is about 1065.9339872553.

Adding to 1211130468 its reverse (8640311121), we get a palindrome (9851441589).

The spelling of 1211130468 in words is "one billion, two hundred eleven million, one hundred thirty thousand, four hundred sixty-eight".