2012121330 has 64 divisors (see below), whose sum is σ = 4980528000. Its totient is φ = 519918080.

The previous prime is 2012121323. The next prime is 2012121367. The reversal of 2012121330 is 331212102.

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

It is a Curzon number.

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, 177781 + ... + 188759.

It is an arithmetic number, because the mean of its divisors is an integer number (77820750).

Almost surely, 2^2012121330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2012121330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2490264000).

2012121330 is an abundant number, since it is smaller than the sum of its proper divisors (2968406670).

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

2012121330 is a wasteful number, since it uses less digits than its factorization.

2012121330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11179.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2012121330 is about 44856.6754229513. The cubic root of 2012121330 is about 1262.4612448320.

Adding to 2012121330 its reverse (331212102), we get a palindrome (2343333432).

The spelling of 2012121330 in words is "two billion, twelve million, one hundred twenty-one thousand, three hundred thirty".