201443242220 has 24 divisors (see below), whose sum is σ = 461488155408. Its totient is φ = 73252088000.

The previous prime is 201443242171. The next prime is 201443242241. The reversal of 201443242220 is 22242344102.

It is a super-2 number, since 2×201443242220² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201443242220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457825331 + ... + 457825770.

It is an arithmetic number, because the mean of its divisors is an integer number (19228673142).

Almost surely, 2^201443242220 is an apocalyptic number.

201443242220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201443242220 is an abundant number, since it is smaller than the sum of its proper divisors (260044913188).

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

201443242220 is a wasteful number, since it uses less digits than its factorization.

201443242220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915651121 (or 915651119 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 201443242220 its reverse (22242344102), we get a palindrome (223685586322).

It can be divided in two parts, 2014 and 43242220, that added together give a palindrome (43244234).

The spelling of 201443242220 in words is "two hundred one billion, four hundred forty-three million, two hundred forty-two thousand, two hundred twenty".