211121121201071 has 2 divisors, whose sum is σ = 211121121201072. Its totient is φ = 211121121201070.

The previous prime is 211121121201061. The next prime is 211121121201121. The reversal of 211121121201071 is 170102121121112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211121121201071 - 2¹⁰ = 211121121200047 is a prime.

It is a super-2 number, since 2×211121121201071² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211121121201061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560560600535 + 105560560600536.

It is an arithmetic number, because the mean of its divisors is an integer number (105560560600536).

Almost surely, 2^{211121121201071} is an apocalyptic number.

211121121201071 is a deficient number, since it is larger than the sum of its proper divisors (1).

211121121201071 is an equidigital number, since it uses as much as digits as its factorization.

211121121201071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 23.

Adding to 211121121201071 its reverse (170102121121112), we get a palindrome (381223242322183).

The spelling of 211121121201071 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred one thousand, seventy-one".