121222202212101 has 4 divisors (see below), whose sum is σ = 161629602949472. Its totient is φ = 80814801474732.

The previous prime is 121222202212039. The next prime is 121222202212141. The reversal of 121222202212101 is 101212202222121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 121222202212101 - 2⁶ = 121222202212037 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 (121222202212141) 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 3 ways as a sum of consecutive naturals, for example, 20203700368681 + ... + 20203700368686.

It is an arithmetic number, because the mean of its divisors is an integer number (40407400737368).

Almost surely, 2^{121222202212101} is an apocalyptic number.

It is an amenable number.

121222202212101 is a deficient number, since it is larger than the sum of its proper divisors (40407400737371).

121222202212101 is an equidigital number, since it uses as much as digits as its factorization.

121222202212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40407400737370.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 121222202212101 its reverse (101212202222121), we get a palindrome (222434404434222).

The spelling of 121222202212101 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, two hundred two million, two hundred twelve thousand, one hundred one".