2021220212 has 48 divisors (see below), whose sum is σ = 4008044544. Its totient is φ = 883548000.

The previous prime is 2021220211. The next prime is 2021220239. The reversal of 2021220212 is 2120221202.

It is a super-2 number, since 2×2021220212² = 8170662290794649888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021220211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217787 + ... + 226877.

It is an arithmetic number, because the mean of its divisors is an integer number (83500928).

Almost surely, 2^2021220212 is an apocalyptic number.

2021220212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2021220212 is a deficient number, since it is larger than the sum of its proper divisors (1986824332).

2021220212 is a wasteful number, since it uses less digits than its factorization.

2021220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9300 (or 9298 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2021220212 is about 44957.9827394424. The cubic root of 2021220212 is about 1264.3613480125.

Adding to 2021220212 its reverse (2120221202), we get a palindrome (4141441414).

The spelling of 2021220212 in words is "two billion, twenty-one million, two hundred twenty thousand, two hundred twelve".