1200020100201 has 24 divisors (see below), whose sum is σ = 1877875796160. Its totient is φ = 734051896416.

The previous prime is 1200020100187. The next prime is 1200020100281. The reversal of 1200020100201 is 1020010200021.

It is not a de Polignac number, because 1200020100201 - 2¹⁰ = 1200020099177 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 (1200020100281) 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, 30688791 + ... + 30727868.

It is an arithmetic number, because the mean of its divisors is an integer number (78244824840).

Almost surely, 2^{1200020100201} is an apocalyptic number.

It is an amenable number.

1200020100201 is a deficient number, since it is larger than the sum of its proper divisors (677855695959).

1200020100201 is a wasteful number, since it uses less digits than its factorization.

1200020100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61416845 (or 61416842 counting only the distinct ones).

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

Adding to 1200020100201 its reverse (1020010200021), we get a palindrome (2220030300222).

The spelling of 1200020100201 in words is "one trillion, two hundred billion, twenty million, one hundred thousand, two hundred one".