1021103122320 has 160 divisors (see below), whose sum is σ = 3598927094400. Its totient is φ = 265961719296.

The previous prime is 1021103122301. The next prime is 1021103122327. The reversal of 1021103122320 is 232213011201.

1021103122320 is a `hidden beast` number, since 1 + 0 + 21 + 10 + 312 + 2 + 320 = 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 = 1021103122293 and 1021103122302.

It is not an unprimeable number, because it can be changed into a prime (1021103122327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5404015 + ... + 5589774.

It is an arithmetic number, because the mean of its divisors is an integer number (22493294340).

Almost surely, 2^{1021103122320} is an apocalyptic number.

1021103122320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021103122320 is an abundant number, since it is smaller than the sum of its proper divisors (2577823972080).

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

1021103122320 is a wasteful number, since it uses less digits than its factorization.

1021103122320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10993854 (or 10993842 counting only the distinct ones).

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

Adding to 1021103122320 its reverse (232213011201), we get a palindrome (1253316133521).

The spelling of 1021103122320 in words is "one trillion, twenty-one billion, one hundred three million, one hundred twenty-two thousand, three hundred twenty".