12121553341 has 2 divisors, whose sum is σ = 12121553342. Its totient is φ = 12121553340.

The previous prime is 12121553303. The next prime is 12121553351. The reversal of 12121553341 is 14335512121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11722392900 + 399160441 = 108270^2 + 19979^2 .

It is a cyclic number.

It is not a de Polignac number, because 12121553341 - 2²⁹ = 11584682429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12121553351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060776670 + 6060776671.

It is an arithmetic number, because the mean of its divisors is an integer number (6060776671).

Almost surely, 2^12121553341 is an apocalyptic number.

It is an amenable number.

12121553341 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121553341 is an equidigital number, since it uses as much as digits as its factorization.

12121553341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 28.

The spelling of 12121553341 in words is "twelve billion, one hundred twenty-one million, five hundred fifty-three thousand, three hundred forty-one".