1211313030000 has 200 divisors, whose sum is σ = 4015966891728. Its totient is φ = 314286336000.

The previous prime is 1211313029989. The next prime is 1211313030007. The reversal of 1211313030000 is 303131121.

It is a tau number, because it is divible by the number of its divisors (200).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211313030007) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 564364 + ... + 1655636.

Almost surely, 2^{1211313030000} is an apocalyptic number.

1211313030000 is a gapful number since it is divisible by the number (10) 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 1211313030000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2007983445864).

1211313030000 is an abundant number, since it is smaller than the sum of its proper divisors (2804653861728).

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

1211313030000 is a wasteful number, since it uses less digits than its factorization.

1211313030000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091341 (or 1091320 counting only the distinct ones).

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

Adding to 1211313030000 its reverse (303131121), we get a palindrome (1211616161121).

The spelling of 1211313030000 in words is "one trillion, two hundred eleven billion, three hundred thirteen million, thirty thousand".