1211102113320 has 192 divisors, whose sum is σ = 4295601123840. Its totient is φ = 293484710400.

The previous prime is 1211102113303. The next prime is 1211102113327. The reversal of 1211102113320 is 233112011121.

1211102113320 is a `hidden beast` number, since 1 + 21 + 110 + 211 + 3 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1211102113293 and 1211102113302.

It is not an unprimeable number, because it can be changed into a prime (1211102113327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10201342 + ... + 10319378.

It is an arithmetic number, because the mean of its divisors is an integer number (22372922520).

Almost surely, 2^{1211102113320} is an apocalyptic number.

1211102113320 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 1211102113320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2147800561920).

1211102113320 is an abundant number, since it is smaller than the sum of its proper divisors (3084499010520).

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

1211102113320 is a wasteful number, since it uses less digits than its factorization.

1211102113320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120656 (or 120649 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1211102113320 its reverse (233112011121), we get a palindrome (1444214124441).

The spelling of 1211102113320 in words is "one trillion, two hundred eleven billion, one hundred two million, one hundred thirteen thousand, three hundred twenty".