2111241220 has 96 divisors (see below), whose sum is σ = 5218286976. Its totient is φ = 708864000.

The previous prime is 2111241211. The next prime is 2111241233. The reversal of 2111241220 is 221421112.

It is a junction number, because it is equal to n+sod(n) for n = 2111241194 and 2111241203.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192895 + ... + 203545.

It is an arithmetic number, because the mean of its divisors is an integer number (54357156).

Almost surely, 2^2111241220 is an apocalyptic number.

2111241220 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 2111241220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2609143488).

2111241220 is an abundant number, since it is smaller than the sum of its proper divisors (3107045756).

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

2111241220 is a wasteful number, since it uses less digits than its factorization.

2111241220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10741 (or 10739 counting only the distinct ones).

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

The square root of 2111241220 is about 45948.2450154519. The cubic root of 2111241220 is about 1282.8600637898.

Adding to 2111241220 its reverse (221421112), we get a palindrome (2332662332).

The spelling of 2111241220 in words is "two billion, one hundred eleven million, two hundred forty-one thousand, two hundred twenty".