2021121210330 has 96 divisors (see below), whose sum is σ = 5306699895120. Its totient is φ = 533663907840.

The previous prime is 2021121210323. The next prime is 2021121210347. The reversal of 2021121210330 is 330121211202.

2021121210330 is a `hidden beast` number, since 2 + 0 + 2 + 1 + 121 + 210 + 330 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 3565164681 + 2017556045649 = 59709^2 + 1420407^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10163050 + ... + 10360010.

Almost surely, 2^{2021121210330} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021121210330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2653349947560).

2021121210330 is an abundant number, since it is smaller than the sum of its proper divisors (3285578684790).

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

2021121210330 is a wasteful number, since it uses less digits than its factorization.

2021121210330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198096 (or 198093 counting only the distinct ones).

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

Adding to 2021121210330 its reverse (330121211202), we get a palindrome (2351242421532).

The spelling of 2021121210330 in words is "two trillion, twenty-one billion, one hundred twenty-one million, two hundred ten thousand, three hundred thirty".