1211130330 has 16 divisors (see below), whose sum is σ = 2906712864. Its totient is φ = 322968080.

The previous prime is 1211130329. The next prime is 1211130331. The reversal of 1211130330 is 330311121.

It is an interprime number because it is at equal distance from previous prime (1211130329) and next prime (1211130331).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1211130331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20185476 + ... + 20185535.

It is an arithmetic number, because the mean of its divisors is an integer number (181669554).

Almost surely, 2^1211130330 is an apocalyptic number.

1211130330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211130330 is an abundant number, since it is smaller than the sum of its proper divisors (1695582534).

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

1211130330 is a wasteful number, since it uses less digits than its factorization.

1211130330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40371021.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1211130330 is about 34801.2978206273. The cubic root of 1211130330 is about 1065.9339467700.

Adding to 1211130330 its reverse (330311121), we get a palindrome (1541441451).

The spelling of 1211130330 in words is "one billion, two hundred eleven million, one hundred thirty thousand, three hundred thirty".