211022101121 has 4 divisors (see below), whose sum is σ = 227254570452. Its totient is φ = 194789631792.

The previous prime is 211022101117. The next prime is 211022101181. The reversal of 211022101121 is 121101220112.

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 59128730896 + 151893370225 = 243164^2 + 389735^2 .

It is a cyclic number.

It is not a de Polignac number, because 211022101121 - 2² = 211022101117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211022101096 and 211022101105.

It is not an unprimeable number, because it can be changed into a prime (211022101181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8116234646 + ... + 8116234671.

It is an arithmetic number, because the mean of its divisors is an integer number (56813642613).

Almost surely, 2^211022101121 is an apocalyptic number.

It is an amenable number.

211022101121 is a deficient number, since it is larger than the sum of its proper divisors (16232469331).

211022101121 is a wasteful number, since it uses less digits than its factorization.

211022101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16232469330.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211022101121 its reverse (121101220112), we get a palindrome (332123321233).

The spelling of 211022101121 in words is "two hundred eleven billion, twenty-two million, one hundred one thousand, one hundred twenty-one".