18902100120001 has 32 divisors (see below), whose sum is σ = 23135776070400. Its totient is φ = 15074625484800.

The previous prime is 18902100119993. The next prime is 18902100120037. The reversal of 18902100120001 is 10002100120981.

It is not a de Polignac number, because 18902100120001 - 2³ = 18902100119993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18902100100001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1215061 + ... + 6267421.

It is an arithmetic number, because the mean of its divisors is an integer number (722993002200).

Almost surely, 2^{18902100120001} is an apocalyptic number.

It is an amenable number.

18902100120001 is a deficient number, since it is larger than the sum of its proper divisors (4233675950399).

18902100120001 is a wasteful number, since it uses less digits than its factorization.

18902100120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5052745.

The product of its (nonzero) digits is 288, while the sum is 25.

Adding to 18902100120001 its reverse (10002100120981), we get a palindrome (28904200240982).

The spelling of 18902100120001 in words is "eighteen trillion, nine hundred two billion, one hundred million, one hundred twenty thousand, one".