1023121103220 has 36 divisors (see below), whose sum is σ = 3103467346980. Its totient is φ = 272832294144.

The previous prime is 1023121103177. The next prime is 1023121103243. The reversal of 1023121103220 is 223011213201.

1023121103220 is a `hidden beast` number, since 1 + 0 + 231 + 2 + 110 + 322 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 748892928996 + 274228174224 = 865386^2 + 523668^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 = 1023121103193 and 1023121103202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2842002885 + ... + 2842003244.

It is an arithmetic number, because the mean of its divisors is an integer number (86207426305).

Almost surely, 2^{1023121103220} is an apocalyptic number.

1023121103220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023121103220 is an abundant number, since it is smaller than the sum of its proper divisors (2080346243760).

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

1023121103220 is a wasteful number, since it uses less digits than its factorization.

1023121103220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5684006144 (or 5684006139 counting only the distinct ones).

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

Adding to 1023121103220 its reverse (223011213201), we get a palindrome (1246132316421).

The spelling of 1023121103220 in words is "one trillion, twenty-three billion, one hundred twenty-one million, one hundred three thousand, two hundred twenty".