18201001002012 has 72 divisors (see below), whose sum is σ = 46202670259200. Its totient is φ = 6041343147168.

The previous prime is 18201001001993. The next prime is 18201001002031. The reversal of 18201001002012 is 21020010010281.

It is an interprime number because it is at equal distance from previous prime (18201001001993) and next prime (18201001002031).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 302477953 + ... + 302538119.

It is an arithmetic number, because the mean of its divisors is an integer number (641703753600).

Almost surely, 2^{18201001002012} is an apocalyptic number.

18201001002012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18201001002012 is an abundant number, since it is smaller than the sum of its proper divisors (28001669257188).

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

18201001002012 is a wasteful number, since it uses less digits than its factorization.

18201001002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95575 (or 95570 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 18201001002012 its reverse (21020010010281), we get a palindrome (39221011012293).

The spelling of 18201001002012 in words is "eighteen trillion, two hundred one billion, one million, two thousand, twelve".