10203310121220 has 84 divisors (see below), whose sum is σ = 32125730802060. Its totient is φ = 2720882695104.

The previous prime is 10203310121203. The next prime is 10203310121243. The reversal of 10203310121220 is 2212101330201.

10203310121220 is a `hidden beast` number, since 10 + 2 + 0 + 3 + 310 + 121 + 220 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3559659530436 + 6643650590784 = 1886706^2 + 2577528^2 .

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 = 10203310121193 and 10203310121202.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 349893175 + ... + 349922334.

It is an arithmetic number, because the mean of its divisors is an integer number (382449176215).

Almost surely, 2^{10203310121220} is an apocalyptic number.

10203310121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10203310121220 is an abundant number, since it is smaller than the sum of its proper divisors (21922420680840).

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

10203310121220 is an equidigital number, since it uses as much as digits as its factorization.

10203310121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699815536 (or 699815519 counting only the distinct ones).

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

Adding to 10203310121220 its reverse (2212101330201), we get a palindrome (12415411451421).

The spelling of 10203310121220 in words is "ten trillion, two hundred three billion, three hundred ten million, one hundred twenty-one thousand, two hundred twenty".