2121302031212 has 144 divisors (see below), whose sum is σ = 4781617787520. Its totient is φ = 815696179200.

The previous prime is 2121302031209. The next prime is 2121302031217.

2121302031212 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (2121302031217) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28273364 + ... + 28348292.

It is an arithmetic number, because the mean of its divisors is an integer number (33205679080).

Almost surely, 2^{2121302031212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2121302031212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2390808893760).

2121302031212 is an abundant number, since it is smaller than the sum of its proper divisors (2660315756308).

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

2121302031212 is a wasteful number, since it uses less digits than its factorization.

2121302031212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75272 (or 75263 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The spelling of 2121302031212 in words is "two trillion, one hundred twenty-one billion, three hundred two million, thirty-one thousand, two hundred twelve".