211011202121051 has 2 divisors, whose sum is σ = 211011202121052. Its totient is φ = 211011202121050.

The previous prime is 211011202121017. The next prime is 211011202121149. The reversal of 211011202121051 is 150121202110112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211011202121051 - 2²² = 211011197926747 is a prime.

It is not a weakly prime, because it can be changed into another prime (211011207121051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (37) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105505601060525 + 105505601060526.

It is an arithmetic number, because the mean of its divisors is an integer number (105505601060526).

Almost surely, 2^{211011202121051} is an apocalyptic number.

211011202121051 is a deficient number, since it is larger than the sum of its proper divisors (1).

211011202121051 is an equidigital number, since it uses as much as digits as its factorization.

211011202121051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 20.

Adding to 211011202121051 its reverse (150121202110112), we get a palindrome (361132404231163).

The spelling of 211011202121051 in words is "two hundred eleven trillion, eleven billion, two hundred two million, one hundred twenty-one thousand, fifty-one".