1000021201320 has 32 divisors (see below), whose sum is σ = 3000063604320. Its totient is φ = 266672320320.

The previous prime is 1000021201279. The next prime is 1000021201331. The reversal of 1000021201320 is 231021200001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1000021201296 and 1000021201305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4166754886 + ... + 4166755125.

It is an arithmetic number, because the mean of its divisors is an integer number (93751987635).

Almost surely, 2^{1000021201320} is an apocalyptic number.

1000021201320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000021201320 is an abundant number, since it is smaller than the sum of its proper divisors (2000042403000).

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

1000021201320 is a wasteful number, since it uses less digits than its factorization.

1000021201320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8333510025 (or 8333510021 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 1000021201320 its reverse (231021200001), we get a palindrome (1231042401321).

The spelling of 1000021201320 in words is "one trillion, twenty-one million, two hundred one thousand, three hundred twenty".