1211103230010 has 256 divisors, whose sum is σ = 3114490798080. Its totient is φ = 300960645120.

The previous prime is 1211103230003. The next prime is 1211103230027. The reversal of 1211103230010 is 100323011121.

It is a happy number.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 791052945 + ... + 791054475.

It is an arithmetic number, because the mean of its divisors is an integer number (12165979680).

Almost surely, 2^{1211103230010} is an apocalyptic number.

1211103230010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211103230010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1557245399040).

1211103230010 is an abundant number, since it is smaller than the sum of its proper divisors (1903387568070).

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

1211103230010 is a wasteful number, since it uses less digits than its factorization.

1211103230010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941.

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

Adding to 1211103230010 its reverse (100323011121), we get a palindrome (1311426241131).

The spelling of 1211103230010 in words is "one trillion, two hundred eleven billion, one hundred three million, two hundred thirty thousand, ten".