121132002210221 has 4 divisors (see below), whose sum is σ = 121132042391100. Its totient is φ = 121131962029344.

The previous prime is 121132002210217. The next prime is 121132002210251. The reversal of 121132002210221 is 122012200231121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18988416304900 + 102143585905321 = 4357570^2 + 10106611^2 .

It is a cyclic number.

It is not a de Polignac number, because 121132002210221 - 2² = 121132002210217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121132002210193 and 121132002210202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121132002210251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15166106 + ... + 21731883.

It is an arithmetic number, because the mean of its divisors is an integer number (30283010597775).

Almost surely, 2^{121132002210221} is an apocalyptic number.

It is an amenable number.

121132002210221 is a deficient number, since it is larger than the sum of its proper divisors (40180879).

121132002210221 is an equidigital number, since it uses as much as digits as its factorization.

121132002210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40180878.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 121132002210221 its reverse (122012200231121), we get a palindrome (243144202441342).

The spelling of 121132002210221 in words is "one hundred twenty-one trillion, one hundred thirty-two billion, two million, two hundred ten thousand, two hundred twenty-one".