102204121013 has 4 divisors (see below), whose sum is σ = 102204760428. Its totient is φ = 102203481600.

The previous prime is 102204121009. The next prime is 102204121027. The reversal of 102204121013 is 310121402201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 310121402201 = 13 ⋅23855492477.

It can be written as a sum of positive squares in 2 ways, for example, as 21356022769 + 80848098244 = 146137^2 + 284338^2 .

It is a cyclic number.

It is not a de Polignac number, because 102204121013 - 2² = 102204121009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102204120982 and 102204121000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102204121003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155495 + ... + 478107.

It is an arithmetic number, because the mean of its divisors is an integer number (25551190107).

Almost surely, 2^102204121013 is an apocalyptic number.

It is an amenable number.

102204121013 is a deficient number, since it is larger than the sum of its proper divisors (639415).

102204121013 is an equidigital number, since it uses as much as digits as its factorization.

102204121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639414.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 102204121013 its reverse (310121402201), we get a palindrome (412325523214).

The spelling of 102204121013 in words is "one hundred two billion, two hundred four million, one hundred twenty-one thousand, thirteen".