2222201987 has 4 divisors (see below), whose sum is σ = 2224708176. Its totient is φ = 2219695800.

The previous prime is 2222201963. The next prime is 2222201999. The reversal of 2222201987 is 7891022222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2222201987 - 2⁸ = 2222201731 is a prime.

It is a super-3 number, since 3×2222201987³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2222203987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1251764 + ... + 1253537.

It is an arithmetic number, because the mean of its divisors is an integer number (556177044).

Almost surely, 2^2222201987 is an apocalyptic number.

2222201987 is a deficient number, since it is larger than the sum of its proper divisors (2506189).

2222201987 is an equidigital number, since it uses as much as digits as its factorization.

2222201987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506188.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 2222201987 is about 47140.2374516718. The cubic root of 2222201987 is about 1304.9519194668.

The spelling of 2222201987 in words is "two billion, two hundred twenty-two million, two hundred one thousand, nine hundred eighty-seven".