121214402341421 has 2 divisors, whose sum is σ = 121214402341422. Its totient is φ = 121214402341420.

The previous prime is 121214402341367. The next prime is 121214402341463. The reversal of 121214402341421 is 124143204412121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97937743322500 + 23276659018921 = 9896350^2 + 4824589^2 .

It is a cyclic number.

It is not a de Polignac number, because 121214402341421 - 2³⁴ = 121197222472237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121214402343421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60607201170710 + 60607201170711.

It is an arithmetic number, because the mean of its divisors is an integer number (60607201170711).

Almost surely, 2^{121214402341421} is an apocalyptic number.

It is an amenable number.

121214402341421 is a deficient number, since it is larger than the sum of its proper divisors (1).

121214402341421 is an equidigital number, since it uses as much as digits as its factorization.

121214402341421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 32.

Adding to 121214402341421 its reverse (124143204412121), we get a palindrome (245357606753542).

The spelling of 121214402341421 in words is "one hundred twenty-one trillion, two hundred fourteen billion, four hundred two million, three hundred forty-one thousand, four hundred twenty-one".