2123311201200 has 240 divisors, whose sum is σ = 8637046082560. Its totient is φ = 485328257280.

The previous prime is 2123311201097. The next prime is 2123311201211. The reversal of 2123311201200 is 21021133212.

2123311201200 is a `hidden beast` number, since 2 + 12 + 331 + 120 + 1 + 200 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13967464 + ... + 14118663.

Almost surely, 2^{2123311201200} is an apocalyptic number.

2123311201200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123311201200 is an abundant number, since it is smaller than the sum of its proper divisors (6513734881360).

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

2123311201200 is a wasteful number, since it uses less digits than its factorization.

2123311201200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28086161 (or 28086144 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2123311201200 its reverse (21021133212), we get a palindrome (2144332334412).

The spelling of 2123311201200 in words is "two trillion, one hundred twenty-three billion, three hundred eleven million, two hundred one thousand, two hundred".