1101224020 has 48 divisors (see below), whose sum is σ = 2493025920. Its totient is φ = 406187136.

The previous prime is 1101224009. The next prime is 1101224027. The reversal of 1101224020 is 204221011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101224027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377889 + ... + 380791.

It is an arithmetic number, because the mean of its divisors is an integer number (51938040).

Almost surely, 2^1101224020 is an apocalyptic number.

1101224020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101224020 is an abundant number, since it is smaller than the sum of its proper divisors (1391801900).

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

1101224020 is a wasteful number, since it uses less digits than its factorization.

1101224020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4384 (or 4382 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1101224020 is about 33184.6955688914. The cubic root of 1101224020 is about 1032.6628618604.

Adding to 1101224020 its reverse (204221011), we get a palindrome (1305445031).

The spelling of 1101224020 in words is "one billion, one hundred one million, two hundred twenty-four thousand, twenty".