121220212201 has 8 divisors (see below), whose sum is σ = 132243100704. Its totient is φ = 110197801920.

The previous prime is 121220212177. The next prime is 121220212213. The reversal of 121220212201 is 102212022121.

It is a happy number.

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 121220212201 - 2²¹ = 121218115049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121220212241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597441 + ... + 774193.

It is an arithmetic number, because the mean of its divisors is an integer number (16530387588).

Almost surely, 2^121220212201 is an apocalyptic number.

121220212201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121220212201 is a deficient number, since it is larger than the sum of its proper divisors (11022888503).

121220212201 is a wasteful number, since it uses less digits than its factorization.

121220212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239111.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121220212201 its reverse (102212022121), we get a palindrome (223432234322).

The spelling of 121220212201 in words is "one hundred twenty-one billion, two hundred twenty million, two hundred twelve thousand, two hundred one".