10111001212001 has 2 divisors, whose sum is σ = 10111001212002. Its totient is φ = 10111001212000.

The previous prime is 10111001211929. The next prime is 10111001212049. The reversal of 10111001212001 is 10021210011101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8437020669025 + 1673980542976 = 2904655^2 + 1293824^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10111001212001 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (10111001211001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055500606000 + 5055500606001.

It is an arithmetic number, because the mean of its divisors is an integer number (5055500606001).

Almost surely, 2^{10111001212001} is an apocalyptic number.

It is an amenable number.

10111001212001 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111001212001 is an equidigital number, since it uses as much as digits as its factorization.

10111001212001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10111001212001 its reverse (10021210011101), we get a palindrome (20132211223102).

The spelling of 10111001212001 in words is "ten trillion, one hundred eleven billion, one million, two hundred twelve thousand, one".