2220143985 has 80 divisors (see below), whose sum is σ = 4234450176. Its totient is φ = 1113585408.

The previous prime is 2220143969. The next prime is 2220143993. The reversal of 2220143985 is 5893410222.

It is a happy number.

It is not a de Polignac number, because 2220143985 - 2⁴ = 2220143969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1672392 + ... + 1673718.

Almost surely, 2^2220143985 is an apocalyptic number.

It is an amenable number.

2220143985 is a deficient number, since it is larger than the sum of its proper divisors (2014306191).

2220143985 is an frugal number, since it uses more digits than its factorization.

2220143985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376 (or 1352 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 2220143985 is about 47118.4038885020. The cubic root of 2220143985 is about 1304.5489523267.

The spelling of 2220143985 in words is "two billion, two hundred twenty million, one hundred forty-three thousand, nine hundred eighty-five".