2121200100201 has 64 divisors (see below), whose sum is σ = 3496242003968. Its totient is φ = 1113968360448.

The previous prime is 2121200100191. The next prime is 2121200100209. The reversal of 2121200100201 is 1020010021212.

It is not a de Polignac number, because 2121200100201 - 2⁶ = 2121200100137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121200100209) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 57549360 + ... + 57586206.

It is an arithmetic number, because the mean of its divisors is an integer number (54628781312).

Almost surely, 2^{2121200100201} is an apocalyptic number.

2121200100201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2121200100201 is a deficient number, since it is larger than the sum of its proper divisors (1375041903767).

2121200100201 is a wasteful number, since it uses less digits than its factorization.

2121200100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37790.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2121200100201 its reverse (1020010021212), we get a palindrome (3141210121413).

The spelling of 2121200100201 in words is "two trillion, one hundred twenty-one billion, two hundred million, one hundred thousand, two hundred one".