121202341221 has 16 divisors (see below), whose sum is σ = 174330644544. Its totient is φ = 74458978944.

The previous prime is 121202341181. The next prime is 121202341241. The reversal of 121202341221 is 122143202121.

It is a happy number.

It is not a de Polignac number, because 121202341221 - 2⁶ = 121202341157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121202341241) 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 15 ways as a sum of consecutive naturals, for example, 2624256 + ... + 2670041.

It is an arithmetic number, because the mean of its divisors is an integer number (10895665284).

Almost surely, 2^121202341221 is an apocalyptic number.

It is an amenable number.

121202341221 is a deficient number, since it is larger than the sum of its proper divisors (53128303323).

121202341221 is a wasteful number, since it uses less digits than its factorization.

121202341221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5294900.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 121202341221 its reverse (122143202121), we get a palindrome (243345543342).

The spelling of 121202341221 in words is "one hundred twenty-one billion, two hundred two million, three hundred forty-one thousand, two hundred twenty-one".