18121200201002 has 8 divisors (see below), whose sum is σ = 27445701275616. Its totient is φ = 8972633109132.

The previous prime is 18121200200993. The next prime is 18121200201043. The reversal of 18121200201002 is 20010200212181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43983495428 + ... + 43983495839.

It is an arithmetic number, because the mean of its divisors is an integer number (3430712659452).

Almost surely, 2^{18121200201002} is an apocalyptic number.

18121200201002 is a deficient number, since it is larger than the sum of its proper divisors (9324501074614).

18121200201002 is a wasteful number, since it uses less digits than its factorization.

18121200201002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87966991372.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 18121200201002 its reverse (20010200212181), we get a palindrome (38131400413183).

The spelling of 18121200201002 in words is "eighteen trillion, one hundred twenty-one billion, two hundred million, two hundred one thousand, two".