2021022015 has 16 divisors (see below), whose sum is σ = 3250054368. Its totient is φ = 1072405376.

The previous prime is 2021022013. The next prime is 2021022071. The reversal of 2021022015 is 5102201202.

It is a cyclic number.

It is not a de Polignac number, because 2021022015 - 2¹ = 2021022013 is a prime.

It is a super-2 number, since 2×2021022015² = 8169059970229320450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 2021021985 and 2021022003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021022013) 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, 339012 + ... + 344921.

It is an arithmetic number, because the mean of its divisors is an integer number (203128398).

Almost surely, 2^2021022015 is an apocalyptic number.

2021022015 is a deficient number, since it is larger than the sum of its proper divisors (1229032353).

2021022015 is a wasteful number, since it uses less digits than its factorization.

2021022015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684138.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 2021022015 is about 44955.7784383721. The cubic root of 2021022015 is about 1264.3200197073.

Adding to 2021022015 its reverse (5102201202), we get a palindrome (7123223217).

The spelling of 2021022015 in words is "two billion, twenty-one million, twenty-two thousand, fifteen".