1102121323220 has 12 divisors (see below), whose sum is σ = 2314454778804. Its totient is φ = 440848529280.

The previous prime is 1102121323217. The next prime is 1102121323243. The reversal of 1102121323220 is 223231212011.

It can be written as a sum of positive squares in 2 ways, for example, as 130232930884 + 971888392336 = 360878^2 + 985844^2 .

It is a super-2 number, since 2×1102121323220² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 55106066161 = 1102121323220 / (1 + 1 + 0 + 2 + 1 + 2 + 1 + 3 + 2 + 3 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1102121323192 and 1102121323201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27553033061 + ... + 27553033100.

It is an arithmetic number, because the mean of its divisors is an integer number (192871231567).

Almost surely, 2^{1102121323220} is an apocalyptic number.

1102121323220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1102121323220 is an abundant number, since it is smaller than the sum of its proper divisors (1212333455584).

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

1102121323220 is a wasteful number, since it uses less digits than its factorization.

1102121323220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55106066170 (or 55106066168 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1102121323220 its reverse (223231212011), we get a palindrome (1325352535231).

The spelling of 1102121323220 in words is "one trillion, one hundred two billion, one hundred twenty-one million, three hundred twenty-three thousand, two hundred twenty".