102002120020005 has 16 divisors (see below), whose sum is σ = 163265946096960. Its totient is φ = 54380279322368.

The previous prime is 102002120019991. The next prime is 102002120020007. The reversal of 102002120020005 is 500020021200201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102002120020005 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102002120020007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1303169247 + ... + 1303247516.

It is an arithmetic number, because the mean of its divisors is an integer number (10204121631060).

Almost surely, 2^{102002120020005} is an apocalyptic number.

102002120020005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102002120020005 is a deficient number, since it is larger than the sum of its proper divisors (61263826076955).

102002120020005 is a wasteful number, since it uses less digits than its factorization.

102002120020005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2606419380.

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 102002120020005 its reverse (500020021200201), we get a palindrome (602022141220206).

The spelling of 102002120020005 in words is "one hundred two trillion, two billion, one hundred twenty million, twenty thousand, five".