2111224220 has 48 divisors (see below), whose sum is σ = 5364999360. Its totient is φ = 681268224.

The previous prime is 2111224201. The next prime is 2111224243. The reversal of 2111224220 is 224221112.

It is a super-2 number, since 2×2111224220² = 8914535414229216800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 441155 + ... + 445914.

It is an arithmetic number, because the mean of its divisors is an integer number (111770820).

Almost surely, 2^2111224220 is an apocalyptic number.

2111224220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111224220 is an abundant number, since it is smaller than the sum of its proper divisors (3253775140).

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

2111224220 is a wasteful number, since it uses less digits than its factorization.

2111224220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887102 (or 887100 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 2111224220 is about 45948.0600243362. The cubic root of 2111224220 is about 1282.8566205263.

Adding to 2111224220 its reverse (224221112), we get a palindrome (2335445332).

The spelling of 2111224220 in words is "two billion, one hundred eleven million, two hundred twenty-four thousand, two hundred twenty".