1201200200001 has 24 divisors (see below), whose sum is σ = 1770553826496. Its totient is φ = 784468582560.

The previous prime is 1201200199949. The next prime is 1201200200069. The reversal of 1201200200001 is 1000020021021.

It is not a de Polignac number, because 1201200200001 - 2²¹ = 1201198102849 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1201200200071) 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, 1651485 + ... + 2264906.

It is an arithmetic number, because the mean of its divisors is an integer number (73773076104).

Almost surely, 2^{1201200200001} is an apocalyptic number.

It is an amenable number.

1201200200001 is a deficient number, since it is larger than the sum of its proper divisors (569353626495).

1201200200001 is a wasteful number, since it uses less digits than its factorization.

1201200200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3917093 (or 3917090 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1201200200001 its reverse (1000020021021), we get a palindrome (2201220221022).

The spelling of 1201200200001 in words is "one trillion, two hundred one billion, two hundred million, two hundred thousand, one".