121341341221 has 2 divisors, whose sum is σ = 121341341222. Its totient is φ = 121341341220.

The previous prime is 121341341213. The next prime is 121341341281. The reversal of 121341341221 is 122143143121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116066950596 + 5274390625 = 340686^2 + 72625^2 .

It is a cyclic number.

It is not a de Polignac number, because 121341341221 - 2³ = 121341341213 is a prime.

It is a super-2 number, since 2×121341341221² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121341341281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60670670610 + 60670670611.

It is an arithmetic number, because the mean of its divisors is an integer number (60670670611).

Almost surely, 2^121341341221 is an apocalyptic number.

It is an amenable number.

121341341221 is a deficient number, since it is larger than the sum of its proper divisors (1).

121341341221 is an equidigital number, since it uses as much as digits as its factorization.

121341341221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 25.

Adding to 121341341221 its reverse (122143143121), we get a palindrome (243484484342).

The spelling of 121341341221 in words is "one hundred twenty-one billion, three hundred forty-one million, three hundred forty-one thousand, two hundred twenty-one".