2101002011200 has 84 divisors (see below), whose sum is σ = 5473882737252. Its totient is φ = 790965452800.

The previous prime is 2101002011117. The next prime is 2101002011231. The reversal of 2101002011200 is 21102001012.

It can be written as a sum of positive squares in 6 ways, for example, as 61452426816 + 2039549584384 = 247896^2 + 1428128^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38594161 + ... + 38648560.

Almost surely, 2^{2101002011200} is an apocalyptic number.

2101002011200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101002011200 is an abundant number, since it is smaller than the sum of its proper divisors (3372880726052).

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

2101002011200 is a wasteful number, since it uses less digits than its factorization.

2101002011200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77242760 (or 77242745 counting only the distinct ones).

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

Adding to 2101002011200 its reverse (21102001012), we get a palindrome (2122104012212).

The spelling of 2101002011200 in words is "two trillion, one hundred one billion, two million, eleven thousand, two hundred".