121210022021221 has 8 divisors (see below), whose sum is σ = 140082208436160. Its totient is φ = 102726952852128.

The previous prime is 121210022021219. The next prime is 121210022021251. The reversal of 121210022021221 is 122120220012121.

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 121210022021221 - 2¹ = 121210022021219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210022021251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97279310791 + ... + 97279312036.

It is an arithmetic number, because the mean of its divisors is an integer number (17510276054520).

Almost surely, 2^{121210022021221} is an apocalyptic number.

It is an amenable number.

121210022021221 is a deficient number, since it is larger than the sum of its proper divisors (18872186414939).

121210022021221 is an equidigital number, since it uses as much as digits as its factorization.

121210022021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194558622923.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121210022021221 its reverse (122120220012121), we get a palindrome (243330242033342).

The spelling of 121210022021221 in words is "one hundred twenty-one trillion, two hundred ten billion, twenty-two million, twenty-one thousand, two hundred twenty-one".