2222021986 has 4 divisors (see below), whose sum is σ = 3333032982. Its totient is φ = 1111010992.

The previous prime is 2222021983. The next prime is 2222022017. The reversal of 2222021986 is 6891202222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6891202222 = 2 ⋅3445601111.

It can be written as a sum of positive squares in only one way, i.e., 1668314025 + 553707961 = 40845^2 + 23531^2 .

It is not an unprimeable number, because it can be changed into a prime (2222021983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555505495 + ... + 555505498.

Almost surely, 2^2222021986 is an apocalyptic number.

2222021986 is a deficient number, since it is larger than the sum of its proper divisors (1111010996).

2222021986 is a wasteful number, since it uses less digits than its factorization.

2222021986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111010995.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 2222021986 is about 47138.3282053999. The cubic root of 2222021986 is about 1304.9166842970.

The spelling of 2222021986 in words is "two billion, two hundred twenty-two million, twenty-one thousand, nine hundred eighty-six".