212122012011001 has 2 divisors, whose sum is σ = 212122012011002. Its totient is φ = 212122012011000.

The previous prime is 212122012010983. The next prime is 212122012011037. The reversal of 212122012011001 is 100110210221212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116231599717776 + 95890412293225 = 10781076^2 + 9792365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212122012011001 is a prime.

It is not a weakly prime, because it can be changed into another prime (212122012011071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106061006005500 + 106061006005501.

It is an arithmetic number, because the mean of its divisors is an integer number (106061006005501).

Almost surely, 2^{212122012011001} is an apocalyptic number.

It is an amenable number.

212122012011001 is a deficient number, since it is larger than the sum of its proper divisors (1).

212122012011001 is an equidigital number, since it uses as much as digits as its factorization.

212122012011001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212122012011001 its reverse (100110210221212), we get a palindrome (312232222232213).

The spelling of 212122012011001 in words is "two hundred twelve trillion, one hundred twenty-two billion, twelve million, eleven thousand, one".