1012111820201 has 2 divisors, whose sum is σ = 1012111820202. Its totient is φ = 1012111820200.

The previous prime is 1012111820149. The next prime is 1012111820231. The reversal of 1012111820201 is 1020281112101.

It is a happy number.

1012111820201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 813062890000 + 199048930201 = 901700^2 + 446149^2 .

It is an emirp because it is prime and its reverse (1020281112101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012111820201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012111820231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506055910100 + 506055910101.

It is an arithmetic number, because the mean of its divisors is an integer number (506055910101).

Almost surely, 2^{1012111820201} is an apocalyptic number.

It is an amenable number.

1012111820201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012111820201 is an equidigital number, since it uses as much as digits as its factorization.

1012111820201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 1012111820201 its reverse (1020281112101), we get a palindrome (2032392932302).

The spelling of 1012111820201 in words is "one trillion, twelve billion, one hundred eleven million, eight hundred twenty thousand, two hundred one".