11212612120 has 64 divisors (see below), whose sum is σ = 26571916800. Its totient is φ = 4246473600.

The previous prime is 11212612051. The next prime is 11212612133. The reversal of 11212612120 is 2121621211.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1734895 + ... + 1741345.

It is an arithmetic number, because the mean of its divisors is an integer number (415186200).

Almost surely, 2^11212612120 is an apocalyptic number.

11212612120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212612120 is an abundant number, since it is smaller than the sum of its proper divisors (15359304680).

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

11212612120 is a wasteful number, since it uses less digits than its factorization.

11212612120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8768 (or 8764 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Subtracting from 11212612120 its reverse (2121621211), we obtain a palindrome (9090990909).

The spelling of 11212612120 in words is "eleven billion, two hundred twelve million, six hundred twelve thousand, one hundred twenty".