2111001021200 has 30 divisors (see below), whose sum is σ = 5071679954394. Its totient is φ = 844400408320.

The previous prime is 2111001021197. The next prime is 2111001021209. The reversal of 2111001021200 is 21201001112.

It can be written as a sum of positive squares in 3 ways, for example, as 3068716816 + 2107932304384 = 55396^2 + 1451872^2 .

It is not an unprimeable number, because it can be changed into a prime (2111001021209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2638750877 + ... + 2638751676.

Almost surely, 2^{2111001021200} is an apocalyptic number.

2111001021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111001021200 is an abundant number, since it is smaller than the sum of its proper divisors (2960678933194).

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

2111001021200 is a wasteful number, since it uses less digits than its factorization.

2111001021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5277502571 (or 5277502560 counting only the distinct ones).

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

Adding to 2111001021200 its reverse (21201001112), we get a palindrome (2132202022312).

The spelling of 2111001021200 in words is "two trillion, one hundred eleven billion, one million, twenty-one thousand, two hundred".