1211321302230 has 192 divisors, whose sum is σ = 3236902067520. Its totient is φ = 289854609408.

The previous prime is 1211321302223. The next prime is 1211321302237. The reversal of 1211321302230 is 322031231121.

It is an interprime number because it is at equal distance from previous prime (1211321302223) and next prime (1211321302237).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1211321302197 and 1211321302206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211321302237) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 29268712 + ... + 29310068.

It is an arithmetic number, because the mean of its divisors is an integer number (16858864935).

Almost surely, 2^{1211321302230} is an apocalyptic number.

1211321302230 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 1211321302230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1618451033760).

1211321302230 is an abundant number, since it is smaller than the sum of its proper divisors (2025580765290).

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

1211321302230 is a wasteful number, since it uses less digits than its factorization.

1211321302230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41555 (or 41542 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1211321302230 its reverse (322031231121), we get a palindrome (1533352533351).

The spelling of 1211321302230 in words is "one trillion, two hundred eleven billion, three hundred twenty-one million, three hundred two thousand, two hundred thirty".