2021212222 has 8 divisors (see below), whose sum is σ = 3035239056. Its totient is φ = 1009465872.

The previous prime is 2021212213. The next prime is 2021212241. The reversal of 2021212222 is 2222121202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2021212196 and 2021212205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 567903 + ... + 571450.

It is an arithmetic number, because the mean of its divisors is an integer number (379404882).

Almost surely, 2^2021212222 is an apocalyptic number.

2021212222 is a deficient number, since it is larger than the sum of its proper divisors (1014026834).

2021212222 is a wasteful number, since it uses less digits than its factorization.

2021212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140242.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 2021212222 is about 44957.8938786060. The cubic root of 2021212222 is about 1264.3596819792.

Adding to 2021212222 its reverse (2222121202), we get a palindrome (4243333424).

The spelling of 2021212222 in words is "two billion, twenty-one million, two hundred twelve thousand, two hundred twenty-two".