210001001211101 has 4 divisors (see below), whose sum is σ = 211963627390752. Its totient is φ = 208038375031452.

The previous prime is 210001001211047. The next prime is 210001001211119. The reversal of 210001001211101 is 101112100100012.

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 210001001211101 - 2¹⁴ = 210001001194717 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 (210001001211191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 981313089665 + ... + 981313089878.

It is an arithmetic number, because the mean of its divisors is an integer number (52990906847688).

Almost surely, 2^{210001001211101} is an apocalyptic number.

It is an amenable number.

210001001211101 is a deficient number, since it is larger than the sum of its proper divisors (1962626179651).

210001001211101 is a wasteful number, since it uses less digits than its factorization.

210001001211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962626179650.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 210001001211101 its reverse (101112100100012), we get a palindrome (311113101311113).

The spelling of 210001001211101 in words is "two hundred ten trillion, one billion, one million, two hundred eleven thousand, one hundred one".