1200002011101 has 24 divisors (see below), whose sum is σ = 1770291244800. Its totient is φ = 782946636576.

The previous prime is 1200002011093. The next prime is 1200002011121. The reversal of 1200002011101 is 1011102000021.

It is a happy number.

It is not a de Polignac number, because 1200002011101 - 2³ = 1200002011093 is a prime.

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 (1200002011121) 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, 13406371 + ... + 13495583.

It is an arithmetic number, because the mean of its divisors is an integer number (73762135200).

Almost surely, 2^{1200002011101} is an apocalyptic number.

It is an amenable number.

1200002011101 is a deficient number, since it is larger than the sum of its proper divisors (570289233699).

1200002011101 is a wasteful number, since it uses less digits than its factorization.

1200002011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121065 (or 121062 counting only the distinct ones).

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

Adding to 1200002011101 its reverse (1011102000021), we get a palindrome (2211104011122).

The spelling of 1200002011101 in words is "one trillion, two hundred billion, two million, eleven thousand, one hundred one".