1023300021220 has 48 divisors (see below), whose sum is σ = 2158706204928. Its totient is φ = 407461051520.

The previous prime is 1023300021199. The next prime is 1023300021251. The reversal of 1023300021220 is 221200033201.

It is a junction number, because it is equal to n+sod(n) for n = 1023300021194 and 1023300021203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5099385 + ... + 5296255.

It is an arithmetic number, because the mean of its divisors is an integer number (44973045936).

Almost surely, 2^{1023300021220} is an apocalyptic number.

1023300021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023300021220 is an abundant number, since it is smaller than the sum of its proper divisors (1135406183708).

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

1023300021220 is a wasteful number, since it uses less digits than its factorization.

1023300021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198060 (or 198058 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 1023300021220 its reverse (221200033201), we get a palindrome (1244500054421).

The spelling of 1023300021220 in words is "one trillion, twenty-three billion, three hundred million, twenty-one thousand, two hundred twenty".