2121203132000 has 96 divisors (see below), whose sum is σ = 5220304244064. Its totient is φ = 847096128000.

The previous prime is 2121203131939. The next prime is 2121203132047. The reversal of 2121203132000 is 2313021212.

It is a self number, because there is not a number n which added to its sum of digits gives 2121203132000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2019455 + ... + 2884545.

It is an arithmetic number, because the mean of its divisors is an integer number (54378169209).

Almost surely, 2^{2121203132000} is an apocalyptic number.

2121203132000 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 2121203132000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2610152122032).

2121203132000 is an abundant number, since it is smaller than the sum of its proper divisors (3099101112064).

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

2121203132000 is an equidigital number, since it uses as much as digits as its factorization.

2121203132000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865729 (or 865711 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 2121203132000 its reverse (2313021212), we get a palindrome (2123516153212).

The spelling of 2121203132000 in words is "two trillion, one hundred twenty-one billion, two hundred three million, one hundred thirty-two thousand".