1103121023220 has 72 divisors (see below), whose sum is σ = 3393262454400. Its totient is φ = 290022425280.

The previous prime is 1103121023197. The next prime is 1103121023231. The reversal of 1103121023220 is 223201213011.

1103121023220 is a `hidden beast` number, since 110 + 312 + 1 + 0 + 23 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1103121023193 and 1103121023202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43145320 + ... + 43170879.

It is an arithmetic number, because the mean of its divisors is an integer number (47128645200).

Almost surely, 2^{1103121023220} is an apocalyptic number.

1103121023220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1103121023220 is an abundant number, since it is smaller than the sum of its proper divisors (2290141431180).

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

1103121023220 is a wasteful number, since it uses less digits than its factorization.

1103121023220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86316285 (or 86316280 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1103121023220 its reverse (223201213011), we get a palindrome (1326322236231).

The spelling of 1103121023220 in words is "one trillion, one hundred three billion, one hundred twenty-one million, twenty-three thousand, two hundred twenty".