1012200100101 has 24 divisors (see below), whose sum is σ = 1539792756320. Its totient is φ = 638962325856.

The previous prime is 1012200100049. The next prime is 1012200100157. The reversal of 1012200100101 is 1010010022101.

It is a happy number.

It is not a de Polignac number, because 1012200100101 - 2¹⁰ = 1012200099077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012200110101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1149730 + ... + 1829283.

Almost surely, 2^{1012200100101} is an apocalyptic number.

It is an amenable number.

1012200100101 is a deficient number, since it is larger than the sum of its proper divisors (527592656219).

1012200100101 is a wasteful number, since it uses less digits than its factorization.

1012200100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2981025 (or 2981022 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1012200100101 its reverse (1010010022101), we get a palindrome (2022210122202).

The spelling of 1012200100101 in words is "one trillion, twelve billion, two hundred million, one hundred thousand, one hundred one".