1021203103320 has 80 divisors (see below), whose sum is σ = 3432377108160. Its totient is φ = 272320826688.

The previous prime is 1021203103313. The next prime is 1021203103337. The reversal of 1021203103320 is 233013021201.

1021203103320 is a `hidden beast` number, since 1 + 0 + 2 + 1 + 20 + 310 + 332 + 0 = 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 = 1021203103293 and 1021203103302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 157589832 + ... + 157596311.

It is an arithmetic number, because the mean of its divisors is an integer number (42904713852).

Almost surely, 2^{1021203103320} is an apocalyptic number.

1021203103320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021203103320 is an abundant number, since it is smaller than the sum of its proper divisors (2411174004840).

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

1021203103320 is a wasteful number, since it uses less digits than its factorization.

1021203103320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315186166 (or 315186153 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1021203103320 its reverse (233013021201), we get a palindrome (1254216124521).

The spelling of 1021203103320 in words is "one trillion, twenty-one billion, two hundred three million, one hundred three thousand, three hundred twenty".