11387375211220 has 192 divisors, whose sum is σ = 25697173017600. Its totient is φ = 4223657984000.

The previous prime is 11387375211187. The next prime is 11387375211229. The reversal of 11387375211220 is 2211257378311.

It is a super-2 number, since 2×11387375211220² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11387375211229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10855457256 + ... + 10855458304.

It is an arithmetic number, because the mean of its divisors is an integer number (133839442800).

Almost surely, 2^{11387375211220} is an apocalyptic number.

11387375211220 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 11387375211220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12848586508800).

11387375211220 is an abundant number, since it is smaller than the sum of its proper divisors (14309797806380).

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

11387375211220 is a wasteful number, since it uses less digits than its factorization.

11387375211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434 (or 2432 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 43.

The spelling of 11387375211220 in words is "eleven trillion, three hundred eighty-seven billion, three hundred seventy-five million, two hundred eleven thousand, two hundred twenty".