211122220121051 has 2 divisors, whose sum is σ = 211122220121052. Its totient is φ = 211122220121050.

The previous prime is 211122220121003. The next prime is 211122220121083. The reversal of 211122220121051 is 150121022221112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211122220121051 is a prime.

It is not a weakly prime, because it can be changed into another prime (211122220121851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105561110060525 + 105561110060526.

It is an arithmetic number, because the mean of its divisors is an integer number (105561110060526).

Almost surely, 2^{211122220121051} is an apocalyptic number.

211122220121051 is a deficient number, since it is larger than the sum of its proper divisors (1).

211122220121051 is an equidigital number, since it uses as much as digits as its factorization.

211122220121051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 23.

Adding to 211122220121051 its reverse (150121022221112), we get a palindrome (361243242342163).

The spelling of 211122220121051 in words is "two hundred eleven trillion, one hundred twenty-two billion, two hundred twenty million, one hundred twenty-one thousand, fifty-one".