11005120121250 has 80 divisors (see below), whose sum is σ = 27556791878880. Its totient is φ = 2929065360000.

The previous prime is 11005120121243. The next prime is 11005120121251. The reversal of 11005120121250 is 5212102150011.

It is a super-2 number, since 2×11005120121250² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11005120121251) 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, 862660 + ... + 4770159.

It is an arithmetic number, because the mean of its divisors is an integer number (344459898486).

Almost surely, 2^{11005120121250} is an apocalyptic number.

11005120121250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11005120121250 is an abundant number, since it is smaller than the sum of its proper divisors (16551671757630).

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

11005120121250 is an equidigital number, since it uses as much as digits as its factorization.

11005120121250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5633365 (or 5633350 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 21.

Adding to 11005120121250 its reverse (5212102150011), we get a palindrome (16217222271261).

The spelling of 11005120121250 in words is "eleven trillion, five billion, one hundred twenty million, one hundred twenty-one thousand, two hundred fifty".