121221202101201 has 12 divisors (see below), whose sum is σ = 175161172766580. Its totient is φ = 80784651268320.

The previous prime is 121221202101161. The next prime is 121221202101283. The reversal of 121221202101201 is 102101202122121.

121221202101201 is a `hidden beast` number, since 1 + 212 + 2 + 120 + 210 + 120 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11663427110976 + 109557774990225 = 3415176^2 + 10466985^2 .

It is not a de Polignac number, because 121221202101201 - 2¹⁴ = 121221202084817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121221202151201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2456929446 + ... + 2456978783.

It is an arithmetic number, because the mean of its divisors is an integer number (14596764397215).

Almost surely, 2^{121221202101201} is an apocalyptic number.

It is an amenable number.

121221202101201 is a deficient number, since it is larger than the sum of its proper divisors (53939970665379).

121221202101201 is a wasteful number, since it uses less digits than its factorization.

121221202101201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4913910976 (or 4913910973 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121221202101201 its reverse (102101202122121), we get a palindrome (223322404223322).

The spelling of 121221202101201 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, two hundred two million, one hundred one thousand, two hundred one".