4216661220 has 24 divisors (see below), whose sum is σ = 11806651584. Its totient is φ = 1124442976.

The previous prime is 4216661191. The next prime is 4216661257. The reversal of 4216661220 is 221666124.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35138784 + ... + 35138903.

It is an arithmetic number, because the mean of its divisors is an integer number (491943816).

Almost surely, 2^4216661220 is an apocalyptic number.

It is an amenable number.

4216661220 is an abundant number, since it is smaller than the sum of its proper divisors (7589990364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4216661220 is a wasteful number, since it uses less digits than its factorization.

4216661220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70277699 (or 70277697 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 4216661220 is about 64935.8238570976. The cubic root of 4216661220 is about 1615.5592985315.

The spelling of 4216661220 in words is "four billion, two hundred sixteen million, six hundred sixty-one thousand, two hundred twenty".