2121001010200 has 48 divisors (see below), whose sum is σ = 4932605699280. Its totient is φ = 848180472960.

The previous prime is 2121001010173. The next prime is 2121001010213. The reversal of 2121001010200 is 20101001212.

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

It is a congruent number.

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, 600039 + ... + 2145238.

It is an arithmetic number, because the mean of its divisors is an integer number (102762618735).

Almost surely, 2^{2121001010200} is an apocalyptic number.

2121001010200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121001010200 is an abundant number, since it is smaller than the sum of its proper divisors (2811604689080).

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

2121001010200 is a wasteful number, since it uses less digits than its factorization.

2121001010200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2749156 (or 2749147 counting only the distinct ones).

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

Adding to 2121001010200 its reverse (20101001212), we get a palindrome (2141102011412).

The spelling of 2121001010200 in words is "two trillion, one hundred twenty-one billion, one million, ten thousand, two hundred".