689012101211021 has 32 divisors (see below), whose sum is σ = 790885996462080. Its totient is φ = 588005036441856.

The previous prime is 689012101210987. The next prime is 689012101211047. The reversal of 689012101211021 is 120112101210986.

It is a cyclic number.

It is not a de Polignac number, because 689012101211021 - 2⁶ = 689012101210957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689012101211051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4160191205 + ... + 4160356821.

It is an arithmetic number, because the mean of its divisors is an integer number (24715187389440).

Almost surely, 2^{689012101211021} is an apocalyptic number.

It is an amenable number.

689012101211021 is a deficient number, since it is larger than the sum of its proper divisors (101873895251059).

689012101211021 is a wasteful number, since it uses less digits than its factorization.

689012101211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168593.

The product of its (nonzero) digits is 3456, while the sum is 35.

Subtracting from 689012101211021 its sum of digits (35), we obtain a palindrome (689012101210986).

The spelling of 689012101211021 in words is "six hundred eighty-nine trillion, twelve billion, one hundred one million, two hundred eleven thousand, twenty-one".