2111021002000 has 80 divisors (see below), whose sum is σ = 5404710562992. Its totient is φ = 794737305600.

The previous prime is 2111021001959. The next prime is 2111021002007. The reversal of 2111021002000 is 2001201112.

It can be written as a sum of positive squares in 8 ways, for example, as 806518948096 + 1304502053904 = 898064^2 + 1142148^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (2111021002007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31010427 + ... + 31078426.

Almost surely, 2^{2111021002000} is an apocalyptic number.

2111021002000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111021002000 is an abundant number, since it is smaller than the sum of its proper divisors (3293689560992).

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

2111021002000 is a wasteful number, since it uses less digits than its factorization.

2111021002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62088893 (or 62088877 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2111021002000 its reverse (2001201112), we get a palindrome (2113022203112).

The spelling of 2111021002000 in words is "two trillion, one hundred eleven billion, twenty-one million, two thousand".