210444142220 has 48 divisors (see below), whose sum is σ = 476722411200. Its totient is φ = 77572674816.

The previous prime is 210444142171. The next prime is 210444142241. The reversal of 210444142220 is 22241444012.

It is a happy number.

It is a super-3 number, since 3×210444142220³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 210444142220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519887 + ... + 831366.

It is an arithmetic number, because the mean of its divisors is an integer number (9931716900).

Almost surely, 2^210444142220 is an apocalyptic number.

210444142220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210444142220 is an abundant number, since it is smaller than the sum of its proper divisors (266278268980).

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

210444142220 is a wasteful number, since it uses less digits than its factorization.

210444142220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351874 (or 1351872 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 210444142220 its reverse (22241444012), we get a palindrome (232685586232).

The spelling of 210444142220 in words is "two hundred ten billion, four hundred forty-four million, one hundred forty-two thousand, two hundred twenty".