121123212201 has 6 divisors (see below), whose sum is σ = 174955750970. Its totient is φ = 80748808128.

The previous prime is 121123212193. The next prime is 121123212209. The reversal of 121123212201 is 102212321121.

121123212201 is a `hidden beast` number, since 1 + 211 + 232 + 1 + 220 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (121123212193) and next prime (121123212209).

It can be written as a sum of positive squares in only one way, i.e., 116113970025 + 5009242176 = 340755^2 + 70776^2 .

It is not a de Polignac number, because 121123212201 - 2³ = 121123212193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121123212209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6729067336 + ... + 6729067353.

Almost surely, 2^121123212201 is an apocalyptic number.

It is an amenable number.

121123212201 is a deficient number, since it is larger than the sum of its proper divisors (53832538769).

121123212201 is a wasteful number, since it uses less digits than its factorization.

121123212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13458134695 (or 13458134692 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 121123212201 its reverse (102212321121), we get a palindrome (223335533322).

The spelling of 121123212201 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred twelve thousand, two hundred one".