2102121100201 has 4 divisors (see below), whose sum is σ = 2169931458304. Its totient is φ = 2034310742100.

The previous prime is 2102121100199. The next prime is 2102121100207. The reversal of 2102121100201 is 1020011212012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2102121100201 - 2¹ = 2102121100199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102121100207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33905179005 + ... + 33905179066.

It is an arithmetic number, because the mean of its divisors is an integer number (542482864576).

Almost surely, 2^{2102121100201} is an apocalyptic number.

It is an amenable number.

2102121100201 is a deficient number, since it is larger than the sum of its proper divisors (67810358103).

2102121100201 is an equidigital number, since it uses as much as digits as its factorization.

2102121100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67810358102.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2102121100201 its reverse (1020011212012), we get a palindrome (3122132312213).

The spelling of 2102121100201 in words is "two trillion, one hundred two billion, one hundred twenty-one million, one hundred thousand, two hundred one".