211202221121101 has 4 divisors (see below), whose sum is σ = 241373966995552. Its totient is φ = 181030475246652.

The previous prime is 211202221121069. The next prime is 211202221121149. The reversal of 211202221121101 is 101121122202112.

It is a happy number.

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 211202221121101 - 2⁵ = 211202221121069 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 (211202221121401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15085872937215 + ... + 15085872937228.

It is an arithmetic number, because the mean of its divisors is an integer number (60343491748888).

Almost surely, 2^{211202221121101} is an apocalyptic number.

It is an amenable number.

211202221121101 is a deficient number, since it is larger than the sum of its proper divisors (30171745874451).

211202221121101 is an equidigital number, since it uses as much as digits as its factorization.

211202221121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30171745874450.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211202221121101 its reverse (101121122202112), we get a palindrome (312323343323213).

The spelling of 211202221121101 in words is "two hundred eleven trillion, two hundred two billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred one".