121212112201 has 8 divisors (see below), whose sum is σ = 123120783680. Its totient is φ = 119306368368.

The previous prime is 121212112181. The next prime is 121212112211. The reversal of 121212112201 is 102211212121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121212112201 - 2¹³ = 121212104009 is a prime.

It is a super-2 number, since 2×121212112201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121212112211) 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 7 ways as a sum of consecutive naturals, for example, 648381 + ... + 814138.

It is an arithmetic number, because the mean of its divisors is an integer number (15390097960).

Almost surely, 2^121212112201 is an apocalyptic number.

It is an amenable number.

121212112201 is a deficient number, since it is larger than the sum of its proper divisors (1908671479).

121212112201 is a wasteful number, since it uses less digits than its factorization.

121212112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463823.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121212112201 its reverse (102211212121), we get a palindrome (223423324322).

The spelling of 121212112201 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred twelve thousand, two hundred one".