201000012002101 has 4 divisors (see below), whose sum is σ = 216461551386892. Its totient is φ = 185538472617312.

The previous prime is 201000012002087. The next prime is 201000012002129. The reversal of 201000012002101 is 101200210000102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89819310063025 + 111180701939076 = 9477305^2 + 10544226^2 .

It is a cyclic number.

It is not a de Polignac number, because 201000012002101 - 2⁹ = 201000012001589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000012002501) 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, 7730769692376 + ... + 7730769692401.

It is an arithmetic number, because the mean of its divisors is an integer number (54115387846723).

Almost surely, 2^{201000012002101} is an apocalyptic number.

It is an amenable number.

201000012002101 is a deficient number, since it is larger than the sum of its proper divisors (15461539384791).

201000012002101 is a wasteful number, since it uses less digits than its factorization.

201000012002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15461539384790.

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

Adding to 201000012002101 its reverse (101200210000102), we get a palindrome (302200222002203).

The spelling of 201000012002101 in words is "two hundred one trillion, twelve million, two thousand, one hundred one".