12202122121221 has 8 divisors (see below), whose sum is σ = 16393690789344. Its totient is φ = 8072650766960.

The previous prime is 12202122121219. The next prime is 12202122121229. The reversal of 12202122121221 is 12212122120221.

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 12202122121221 - 2¹ = 12202122121219 is a prime.

It is a super-2 number, since 2×12202122121221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12202122121229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15524328006 + ... + 15524328791.

It is an arithmetic number, because the mean of its divisors is an integer number (2049211348668).

Almost surely, 2^{12202122121221} is an apocalyptic number.

It is an amenable number.

12202122121221 is a deficient number, since it is larger than the sum of its proper divisors (4191568668123).

12202122121221 is a wasteful number, since it uses less digits than its factorization.

12202122121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31048656931.

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

Adding to 12202122121221 its reverse (12212122120221), we get a palindrome (24414244241442).

It can be divided in two parts, 1220212 and 2121221, that added together give a palindrome (3341433).

The spelling of 12202122121221 in words is "twelve trillion, two hundred two billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-one".