121202201210985 has 48 divisors (see below), whose sum is σ = 223727477270544. Its totient is φ = 60487082827776.

The previous prime is 121202201210983. The next prime is 121202201211001. The reversal of 121202201210985 is 589012102202121.

121202201210985 is a `hidden beast` number, since 1 + 212 + 0 + 220 + 1 + 210 + 9 + 8 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 119929230864 + 121082271980121 = 346308^2 + 11003739^2 .

It is not a de Polignac number, because 121202201210985 - 2¹ = 121202201210983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121202201210983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 457770112 + ... + 458034801.

It is an arithmetic number, because the mean of its divisors is an integer number (4660989109803).

Almost surely, 2^{121202201210985} is an apocalyptic number.

121202201210985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121202201210985 is a deficient number, since it is larger than the sum of its proper divisors (102525276059559).

121202201210985 is a wasteful number, since it uses less digits than its factorization.

121202201210985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915805114 (or 915805111 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The spelling of 121202201210985 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred one million, two hundred ten thousand, nine hundred eighty-five".