2021222105 has 32 divisors (see below), whose sum is σ = 2796249600. Its totient is φ = 1373898240.

The previous prime is 2021222087. The next prime is 2021222111. The reversal of 2021222105 is 5012221202.

It is not a de Polignac number, because 2021222105 - 2⁸ = 2021221849 is a prime.

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, 3628487 + ... + 3629043.

It is an arithmetic number, because the mean of its divisors is an integer number (87382800).

Almost surely, 2^2021222105 is an apocalyptic number.

It is an amenable number.

2021222105 is a deficient number, since it is larger than the sum of its proper divisors (775027495).

2021222105 is a wasteful number, since it uses less digits than its factorization.

2021222105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 2021222105 is about 44958.0037924283. The cubic root of 2021222105 is about 1264.3617427303.

Adding to 2021222105 its reverse (5012221202), we get a palindrome (7033443307).

The spelling of 2021222105 in words is "two billion, twenty-one million, two hundred twenty-two thousand, one hundred five".