2211012120 has 64 divisors (see below), whose sum is σ = 6658938720. Its totient is φ = 587300864.

The previous prime is 2211012091. The next prime is 2211012143. The reversal of 2211012120 is 212101122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2211012096 and 2211012105.

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, 5007 + ... + 66686.

Almost surely, 2^2211012120 is an apocalyptic number.

2211012120 is a gapful number since it is divisible by the number (20) 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 2211012120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3329469360).

2211012120 is an abundant number, since it is smaller than the sum of its proper divisors (4447926600).

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

2211012120 is a wasteful number, since it uses less digits than its factorization.

2211012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71964 (or 71960 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2211012120 is about 47021.4006596996. The cubic root of 2211012120 is about 1302.7578769372.

Adding to 2211012120 its reverse (212101122), we get a palindrome (2423113242).

The spelling of 2211012120 in words is "two billion, two hundred eleven million, twelve thousand, one hundred twenty".