2121123303000 has 576 divisors, whose sum is σ = 8201905377120. Its totient is φ = 491401728000.

The previous prime is 2121123302981. The next prime is 2121123303007. The reversal of 2121123303000 is 3033211212.

2121123303000 is a `hidden beast` number, since 2 + 1 + 21 + 12 + 330 + 300 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121123303007) by changing a digit.

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 143 ways as a sum of consecutive naturals, for example, 33781635 + ... + 33844365.

Almost surely, 2^{2121123303000} is an apocalyptic number.

2121123303000 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 2121123303000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4100952688560).

2121123303000 is an abundant number, since it is smaller than the sum of its proper divisors (6080782074120).

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

2121123303000 is a wasteful number, since it uses less digits than its factorization.

2121123303000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62805 (or 62771 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 2121123303000 its reverse (3033211212), we get a palindrome (2124156514212).

The spelling of 2121123303000 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-three million, three hundred three thousand".