2121201110000 has 100 divisors (see below), whose sum is σ = 5869303059312. Its totient is φ = 727268928000.

The previous prime is 2121201109981. The next prime is 2121201110051. The reversal of 2121201110000 is 111021212.

It is a tau number, because it is divible by the number of its divisors (100).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15081437 + ... + 15221436.

Almost surely, 2^{2121201110000} is an apocalyptic number.

2121201110000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121201110000 is an abundant number, since it is smaller than the sum of its proper divisors (3748101949312).

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

2121201110000 is an equidigital number, since it uses as much as digits as its factorization.

2121201110000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30302908 (or 30302887 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2121201110000 its reverse (111021212), we get a palindrome (2121312131212).

The spelling of 2121201110000 in words is "two trillion, one hundred twenty-one billion, two hundred one million, one hundred ten thousand".