2111124220 has 24 divisors (see below), whose sum is σ = 4477259808. Its totient is φ = 836088000.

The previous prime is 2111124203. The next prime is 2111124229. The reversal of 2111124220 is 224211112.

It is a junction number, because it is equal to n+sod(n) for n = 2111124194 and 2111124203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111124229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520536 + ... + 524575.

It is an arithmetic number, because the mean of its divisors is an integer number (186552492).

Almost surely, 2^2111124220 is an apocalyptic number.

2111124220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111124220 is an abundant number, since it is smaller than the sum of its proper divisors (2366135588).

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

2111124220 is a wasteful number, since it uses less digits than its factorization.

2111124220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045221 (or 1045219 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2111124220 is about 45946.9718262259. The cubic root of 2111124220 is about 1282.8363656608.

Adding to 2111124220 its reverse (224211112), we get a palindrome (2335335332).

The spelling of 2111124220 in words is "two billion, one hundred eleven million, one hundred twenty-four thousand, two hundred twenty".