211120122221101 has 4 divisors (see below), whose sum is σ = 211129902208512. Its totient is φ = 211110342233692.

The previous prime is 211120122221009. The next prime is 211120122221119. The reversal of 211120122221101 is 101122221021112.

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 211120122221101 - 2⁴¹ = 208921098965549 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 (211120122231101) 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, 4889961325 + ... + 4890004498.

It is an arithmetic number, because the mean of its divisors is an integer number (52782475552128).

Almost surely, 2^{211120122221101} is an apocalyptic number.

It is an amenable number.

211120122221101 is a deficient number, since it is larger than the sum of its proper divisors (9779987411).

211120122221101 is an equidigital number, since it uses as much as digits as its factorization.

211120122221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9779987410.

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

Adding to 211120122221101 its reverse (101122221021112), we get a palindrome (312242343242213).

The spelling of 211120122221101 in words is "two hundred eleven trillion, one hundred twenty billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred one".