121202101221 has 8 divisors (see below), whose sum is σ = 170108212320. Its totient is φ = 76548695472.

The previous prime is 121202101211. The next prime is 121202101331. The reversal of 121202101221 is 122101202121.

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

It is not a de Polignac number, because 121202101221 - 2¹⁴ = 121202084837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121202101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121202101201) 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, 1063176270 + ... + 1063176383.

It is an arithmetic number, because the mean of its divisors is an integer number (21263526540).

Almost surely, 2^121202101221 is an apocalyptic number.

It is an amenable number.

121202101221 is a deficient number, since it is larger than the sum of its proper divisors (48906111099).

121202101221 is a wasteful number, since it uses less digits than its factorization.

121202101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126352675.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121202101221 its reverse (122101202121), we get a palindrome (243303303342).

The spelling of 121202101221 in words is "one hundred twenty-one billion, two hundred two million, one hundred one thousand, two hundred twenty-one".