2021211120 has 40 divisors (see below), whose sum is σ = 6265755216. Its totient is φ = 538989568.

The previous prime is 2021211119. The next prime is 2021211131. The reversal of 2021211120 is 211121202.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2021211120² = 8170588783223308800, which contains 22 as substring.

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 = 2021211096 and 2021211105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4210617 + ... + 4211096.

Almost surely, 2^2021211120 is an apocalyptic number.

2021211120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021211120 is an abundant number, since it is smaller than the sum of its proper divisors (4244544096).

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

2021211120 is a wasteful number, since it uses less digits than its factorization.

2021211120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8421729 (or 8421723 counting only the distinct ones).

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

The square root of 2021211120 is about 44957.8816226921. The cubic root of 2021211120 is about 1264.3594521955.

Adding to 2021211120 its reverse (211121202), we get a palindrome (2232332322).

The spelling of 2021211120 in words is "two billion, twenty-one million, two hundred eleven thousand, one hundred twenty".