201100120002 has 12 divisors (see below), whose sum is σ = 435716926710. Its totient is φ = 67033373328.

The previous prime is 201100119989. The next prime is 201100120003. The reversal of 201100120002 is 200021001102.

It can be written as a sum of positive squares in only one way, i.e., 175124673441 + 25975446561 = 418479^2 + 161169^2 .

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 (201100120003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5586114427 + ... + 5586114462.

Almost surely, 2^201100120002 is an apocalyptic number.

201100120002 is an abundant number, since it is smaller than the sum of its proper divisors (234616806708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201100120002 is a wasteful number, since it uses less digits than its factorization.

201100120002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11172228897 (or 11172228894 counting only the distinct ones).

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

Adding to 201100120002 its reverse (200021001102), we get a palindrome (401121121104).

The spelling of 201100120002 in words is "two hundred one billion, one hundred million, one hundred twenty thousand, two".