102123485381 has 4 divisors (see below), whose sum is σ = 102130302732. Its totient is φ = 102116668032.

The previous prime is 102123485333. The next prime is 102123485383. The reversal of 102123485381 is 183584321201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75588704356 + 26534781025 = 274934^2 + 162895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102123485381 is a prime.

It is a super-2 number, since 2×102123485381² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102123485383) 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, 3386156 + ... + 3416181.

It is an arithmetic number, because the mean of its divisors is an integer number (25532575683).

Almost surely, 2^102123485381 is an apocalyptic number.

It is an amenable number.

102123485381 is a deficient number, since it is larger than the sum of its proper divisors (6817351).

102123485381 is an equidigital number, since it uses as much as digits as its factorization.

102123485381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6817350.

The product of its (nonzero) digits is 46080, while the sum is 38.

The spelling of 102123485381 in words is "one hundred two billion, one hundred twenty-three million, four hundred eighty-five thousand, three hundred eighty-one".