1210200001101 has 64 divisors (see below), whose sum is σ = 2208404800000. Its totient is φ = 637834549248.

The previous prime is 1210200001091. The next prime is 1210200001123. The reversal of 1210200001101 is 1011000020121.

It is a happy number.

It is not a de Polignac number, because 1210200001101 - 2²⁶ = 1210132892237 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210200001201) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2871615 + ... + 3265971.

It is an arithmetic number, because the mean of its divisors is an integer number (34506325000).

Almost surely, 2^{1210200001101} is an apocalyptic number.

It is an amenable number.

1210200001101 is a deficient number, since it is larger than the sum of its proper divisors (998204798899).

1210200001101 is a wasteful number, since it uses less digits than its factorization.

1210200001101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395635 (or 395629 counting only the distinct ones).

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

Adding to 1210200001101 its reverse (1011000020121), we get a palindrome (2221200021222).

The spelling of 1210200001101 in words is "one trillion, two hundred ten billion, two hundred million, one thousand, one hundred one".