121421301269 has 2 divisors, whose sum is σ = 121421301270. Its totient is φ = 121421301268.

The previous prime is 121421301259. The next prime is 121421301289. The reversal of 121421301269 is 962103124121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73692160369 + 47729140900 = 271463^2 + 218470^2 .

It is an emirp because it is prime and its reverse (962103124121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121421301269 - 2⁸ = 121421301013 is a prime.

It is a super-2 number, since 2×121421301269² (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 (121421301259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60710650634 + 60710650635.

It is an arithmetic number, because the mean of its divisors is an integer number (60710650635).

Almost surely, 2^121421301269 is an apocalyptic number.

It is an amenable number.

121421301269 is a deficient number, since it is larger than the sum of its proper divisors (1).

121421301269 is an equidigital number, since it uses as much as digits as its factorization.

121421301269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 121421301269 in words is "one hundred twenty-one billion, four hundred twenty-one million, three hundred one thousand, two hundred sixty-nine".