1012120102201 has 4 divisors (see below), whose sum is σ = 1089975494692. Its totient is φ = 934264709712.

The previous prime is 1012120102199. The next prime is 1012120102223. The reversal of 1012120102201 is 1022010212101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 407489445801 + 604630656400 = 638349^2 + 777580^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012120102201 - 2¹ = 1012120102199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 77855392477 = 1012120102201 / (1 + 0 + 1 + 2 + 1 + 2 + 0 + 1 + 0 + 2 + 2 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012120102901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38927696226 + ... + 38927696251.

It is an arithmetic number, because the mean of its divisors is an integer number (272493873673).

Almost surely, 2^{1012120102201} is an apocalyptic number.

It is an amenable number.

1012120102201 is a deficient number, since it is larger than the sum of its proper divisors (77855392491).

1012120102201 is an equidigital number, since it uses as much as digits as its factorization.

1012120102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77855392490.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1012120102201 its reverse (1022010212101), we get a palindrome (2034130314302).

The spelling of 1012120102201 in words is "one trillion, twelve billion, one hundred twenty million, one hundred two thousand, two hundred one".