1200100201101 has 96 divisors (see below), whose sum is σ = 1855047617280. Its totient is φ = 745500672000.

The previous prime is 1200100201093. The next prime is 1200100201121. The reversal of 1200100201101 is 1011020010021.

It is a happy number.

It is not a de Polignac number, because 1200100201101 - 2³ = 1200100201093 is a prime.

It is a super-2 number, since 2×1200100201101² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200100201121) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1400349865 + ... + 1400350721.

It is an arithmetic number, because the mean of its divisors is an integer number (19323412680).

Almost surely, 2^{1200100201101} is an apocalyptic number.

It is an amenable number.

1200100201101 is a deficient number, since it is larger than the sum of its proper divisors (654947416179).

1200100201101 is a wasteful number, since it uses less digits than its factorization.

1200100201101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507 (or 1504 counting only the distinct ones).

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

Adding to 1200100201101 its reverse (1011020010021), we get a palindrome (2211120211122).

The spelling of 1200100201101 in words is "one trillion, two hundred billion, one hundred million, two hundred one thousand, one hundred one".