689012012102101 has 4 divisors (see below), whose sum is σ = 690271631868832. Its totient is φ = 687752392335372.

The previous prime is 689012012102081. The next prime is 689012012102209. The reversal of 689012012102101 is 101201210210986.

689012012102101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-689012012102101 is a prime.

It is a super-2 number, since 2×689012012102101² (a number of 30 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 (689012012102501) 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, 629809882545 + ... + 629809883638.

It is an arithmetic number, because the mean of its divisors is an integer number (172567907967208).

Almost surely, 2^{689012012102101} is an apocalyptic number.

It is an amenable number.

689012012102101 is a deficient number, since it is larger than the sum of its proper divisors (1259619766731).

689012012102101 is a wasteful number, since it uses less digits than its factorization.

689012012102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259619766730.

The product of its (nonzero) digits is 3456, while the sum is 34.

The spelling of 689012012102101 in words is "six hundred eighty-nine trillion, twelve billion, twelve million, one hundred two thousand, one hundred one".