2121132202320 has 160 divisors (see below), whose sum is σ = 6755815600128. Its totient is φ = 550136807424.

The previous prime is 2121132202291. The next prime is 2121132202333. The reversal of 2121132202320 is 232022311212.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 23816112 + ... + 23905008.

Almost surely, 2^{2121132202320} is an apocalyptic number.

2121132202320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2121132202320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3377907800064).

2121132202320 is an abundant number, since it is smaller than the sum of its proper divisors (4634683397808).

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

2121132202320 is a wasteful number, since it uses less digits than its factorization.

2121132202320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91637 (or 91631 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2121132202320 its reverse (232022311212), we get a palindrome (2353154513532).

The spelling of 2121132202320 in words is "two trillion, one hundred twenty-one billion, one hundred thirty-two million, two hundred two thousand, three hundred twenty".