2021023221000 has 128 divisors (see below), whose sum is σ = 7206391445760. Its totient is φ = 461948160000.

The previous prime is 2021023220941. The next prime is 2021023221023. The reversal of 2021023221000 is 1223201202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 31 ways as a sum of consecutive naturals, for example, 48098601 + ... + 48140600.

It is an arithmetic number, because the mean of its divisors is an integer number (56299933170).

Almost surely, 2^{2021023221000} is an apocalyptic number.

2021023221000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021023221000 is an abundant number, since it is smaller than the sum of its proper divisors (5185368224760).

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

2021023221000 is a wasteful number, since it uses less digits than its factorization.

2021023221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96239232 (or 96239218 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 2021023221000 its reverse (1223201202), we get a palindrome (2022246422202).

The spelling of 2021023221000 in words is "two trillion, twenty-one billion, twenty-three million, two hundred twenty-one thousand".