1211103300000 has 288 divisors, whose sum is σ = 4334933671488. Its totient is φ = 293600000000.

The previous prime is 1211103299981. The next prime is 1211103300053. The reversal of 1211103300000 is 33011121.

It is a super-3 number, since 3×1211103300000³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3116500 + ... + 3483500.

It is an arithmetic number, because the mean of its divisors is an integer number (15051853026).

Almost surely, 2^{1211103300000} is an apocalyptic number.

1211103300000 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 1211103300000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2167466835744).

1211103300000 is an abundant number, since it is smaller than the sum of its proper divisors (3123830371488).

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

1211103300000 is an equidigital number, since it uses as much as digits as its factorization.

1211103300000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367050 (or 367022 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 1211103300000 its reverse (33011121), we get a palindrome (1211136311121).

The spelling of 1211103300000 in words is "one trillion, two hundred eleven billion, one hundred three million, three hundred thousand".