144111220 has 48 divisors (see below), whose sum is σ = 330978816. Its totient is φ = 52272000.

The previous prime is 144111211. The next prime is 144111239. The reversal of 144111220 is 22111441.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 144111194 and 144111203.

It is a congruent number.

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, 144925 + ... + 145915.

It is an arithmetic number, because the mean of its divisors is an integer number (6895392).

Almost surely, 2^144111220 is an apocalyptic number.

144111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144111220 is an abundant number, since it is smaller than the sum of its proper divisors (186867596).

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

144111220 is a wasteful number, since it uses less digits than its factorization.

144111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672 (or 1670 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 144111220 is about 12004.6332721995. The cubic root of 144111220 is about 524.2831880305.

Adding to 144111220 its reverse (22111441), we get a palindrome (166222661).

The spelling of 144111220 in words is "one hundred forty-four million, one hundred eleven thousand, two hundred twenty".