1211100012330 has 64 divisors (see below), whose sum is σ = 3130479999360. Its totient is φ = 298092900096.

The previous prime is 1211100012307. The next prime is 1211100012361. The reversal of 1211100012330 is 332100011121.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4987681 + ... + 5224859.

It is an arithmetic number, because the mean of its divisors is an integer number (48913749990).

Almost surely, 2^{1211100012330} is an apocalyptic number.

1211100012330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211100012330 is an abundant number, since it is smaller than the sum of its proper divisors (1919379987030).

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

1211100012330 is a wasteful number, since it uses less digits than its factorization.

1211100012330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250295.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1211100012330 its reverse (332100011121), we get a palindrome (1543200023451).

The spelling of 1211100012330 in words is "one trillion, two hundred eleven billion, one hundred million, twelve thousand, three hundred thirty".