1241111220 has 24 divisors (see below), whose sum is σ = 3475111584. Its totient is φ = 330962976.

The previous prime is 1241111213. The next prime is 1241111233. The reversal of 1241111220 is 221111421.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1241111220.

It is a congruent number.

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, 10342534 + ... + 10342653.

It is an arithmetic number, because the mean of its divisors is an integer number (144796316).

Almost surely, 2^1241111220 is an apocalyptic number.

1241111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1241111220 is an abundant number, since it is smaller than the sum of its proper divisors (2234000364).

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

1241111220 is a wasteful number, since it uses less digits than its factorization.

1241111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20685199 (or 20685197 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1241111220 is about 35229.4084537337. The cubic root of 1241111220 is about 1074.6578958288.

Adding to 1241111220 its reverse (221111421), we get a palindrome (1462222641).

The spelling of 1241111220 in words is "one billion, two hundred forty-one million, one hundred eleven thousand, two hundred twenty".