122012210989 has 4 divisors (see below), whose sum is σ = 122083606620. Its totient is φ = 121940815360.

The previous prime is 122012210987. The next prime is 122012211071. The reversal of 122012210989 is 989012210221.

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 25741635364 + 96270575625 = 160442^2 + 310275^2 .

It is a cyclic number.

It is not a de Polignac number, because 122012210989 - 2¹ = 122012210987 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 (122012210987) 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, 35695252 + ... + 35698669.

It is an arithmetic number, because the mean of its divisors is an integer number (30520901655).

Almost surely, 2^122012210989 is an apocalyptic number.

It is an amenable number.

122012210989 is a deficient number, since it is larger than the sum of its proper divisors (71395631).

122012210989 is an equidigital number, since it uses as much as digits as its factorization.

122012210989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71395630.

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 122012210989 in words is "one hundred twenty-two billion, twelve million, two hundred ten thousand, nine hundred eighty-nine".