102012123869 has 4 divisors (see below), whose sum is σ = 107381183040. Its totient is φ = 96643064700.

The previous prime is 102012123841. The next prime is 102012123877. The reversal of 102012123869 is 968321210201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102012123869 - 2¹⁶ = 102012058333 is a prime.

It is a super-2 number, since 2×102012123869² (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 (102012126869) 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, 2684529557 + ... + 2684529594.

It is an arithmetic number, because the mean of its divisors is an integer number (26845295760).

Almost surely, 2^102012123869 is an apocalyptic number.

102012123869 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

102012123869 is a deficient number, since it is larger than the sum of its proper divisors (5369059171).

102012123869 is an equidigital number, since it uses as much as digits as its factorization.

102012123869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5369059170.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 102012123869 in words is "one hundred two billion, twelve million, one hundred twenty-three thousand, eight hundred sixty-nine".