121122122100985 has 4 divisors (see below), whose sum is σ = 145346546521188. Its totient is φ = 96897697680784.

The previous prime is 121122122100983. The next prime is 121122122101033. The reversal of 121122122100985 is 589001221221121.

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 38738126208016 + 82383995892969 = 6223996^2 + 9076563^2 .

It is a cyclic number.

It is not a de Polignac number, because 121122122100985 - 2¹ = 121122122100983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121122122100983) 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, 12112212210094 + ... + 12112212210103.

It is an arithmetic number, because the mean of its divisors is an integer number (36336636630297).

Almost surely, 2^{121122122100985} is an apocalyptic number.

It is an amenable number.

121122122100985 is a deficient number, since it is larger than the sum of its proper divisors (24224424420203).

121122122100985 is an equidigital number, since it uses as much as digits as its factorization.

121122122100985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24224424420202.

The product of its (nonzero) digits is 11520, while the sum is 37.

The spelling of 121122122100985 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, one hundred twenty-two million, one hundred thousand, nine hundred eighty-five".