11421112120 has 128 divisors (see below), whose sum is σ = 28588723200. Its totient is φ = 4071513600.

The previous prime is 11421112111. The next prime is 11421112121. The reversal of 11421112120 is 2121112411.

It is a super-2 number, since 2×11421112120² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11421112094 and 11421112103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421112121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7044910 + ... + 7046530.

It is an arithmetic number, because the mean of its divisors is an integer number (223349400).

Almost surely, 2^11421112120 is an apocalyptic number.

11421112120 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 11421112120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14294361600).

11421112120 is an abundant number, since it is smaller than the sum of its proper divisors (17167611080).

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

11421112120 is a wasteful number, since it uses less digits than its factorization.

11421112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949 (or 1945 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11421112120 its reverse (2121112411), we get a palindrome (13542224531).

The spelling of 11421112120 in words is "eleven billion, four hundred twenty-one million, one hundred twelve thousand, one hundred twenty".