2123320221200 has 30 divisors (see below), whose sum is σ = 5101276832394. Its totient is φ = 849328088320.

The previous prime is 2123320221181. The next prime is 2123320221221. The reversal of 2123320221200 is 21220233212.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 244874543104 + 1878445678096 = 494848^2 + 1370564^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2654149877 + ... + 2654150676.

Almost surely, 2^{2123320221200} is an apocalyptic number.

2123320221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123320221200 is an abundant number, since it is smaller than the sum of its proper divisors (2977956611194).

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

2123320221200 is a wasteful number, since it uses less digits than its factorization.

2123320221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5308300571 (or 5308300560 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 2123320221200 its reverse (21220233212), we get a palindrome (2144540454412).

The spelling of 2123320221200 in words is "two trillion, one hundred twenty-three billion, three hundred twenty million, two hundred twenty-one thousand, two hundred".