210220144 has 40 divisors (see below), whose sum is σ = 415324112. Its totient is φ = 103057920.

The previous prime is 210220111. The next prime is 210220151. The reversal of 210220144 is 441022012.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246022 + ... + 246874.

Almost surely, 2^210220144 is an apocalyptic number.

It is an amenable number.

210220144 is a deficient number, since it is larger than the sum of its proper divisors (205103968).

210220144 is a wasteful number, since it uses less digits than its factorization.

210220144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 210220144 is about 14498.9704462076. The cubic root of 210220144 is about 594.5998241300.

Adding to 210220144 its reverse (441022012), we get a palindrome (651242156).

The spelling of 210220144 in words is "two hundred ten million, two hundred twenty thousand, one hundred forty-four".