2022021987 has 16 divisors (see below), whose sum is σ = 2712945312. Its totient is φ = 1339573760.

The previous prime is 2022021983. The next prime is 2022022001. The reversal of 2022021987 is 7891202202.

It is a cyclic number.

It is not a de Polignac number, because 2022021987 - 2² = 2022021983 is a prime.

It is a super-2 number, since 2×2022021987² = 8177145831822856338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2022021983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696523 + ... + 699419.

It is an arithmetic number, because the mean of its divisors is an integer number (169559082).

Almost surely, 2^2022021987 is an apocalyptic number.

2022021987 is a deficient number, since it is larger than the sum of its proper divisors (690923325).

2022021987 is a wasteful number, since it uses less digits than its factorization.

2022021987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4278.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 2022021987 is about 44966.8987923339. The cubic root of 2022021987 is about 1264.5285076489.

The spelling of 2022021987 in words is "two billion, twenty-two million, twenty-one thousand, nine hundred eighty-seven".