11122121040 has 80 divisors (see below), whose sum is σ = 35977661568. Its totient is φ = 2836945408.

The previous prime is 11122120981. The next prime is 11122121047. The reversal of 11122121040 is 4012122111.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122121047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1001919 + ... + 1012958.

Almost surely, 2^11122121040 is an apocalyptic number.

11122121040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11122121040 is an abundant number, since it is smaller than the sum of its proper divisors (24855540528).

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

11122121040 is a wasteful number, since it uses less digits than its factorization.

11122121040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014916 (or 2014910 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11122121040 its reverse (4012122111), we get a palindrome (15134243151).

The spelling of 11122121040 in words is "eleven billion, one hundred twenty-two million, one hundred twenty-one thousand, forty".