121420342013213 has 8 divisors (see below), whose sum is σ = 122674730571960. Its totient is φ = 120166007178240.

The previous prime is 121420342013189. The next prime is 121420342013293. The reversal of 121420342013213 is 312310243024121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 45835784065369 + 75584557947844 = 6770213^2 + 8693938^2 .

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 121420342013213 - 2²⁶ = 121420274904349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121420342013293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8879498 + ... + 17935611.

It is an arithmetic number, because the mean of its divisors is an integer number (15334341321495).

Almost surely, 2^{121420342013213} is an apocalyptic number.

It is an amenable number.

121420342013213 is a deficient number, since it is larger than the sum of its proper divisors (1254388558747).

121420342013213 is an equidigital number, since it uses as much as digits as its factorization.

121420342013213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26861887.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 121420342013213 its reverse (312310243024121), we get a palindrome (433730585037334).

The spelling of 121420342013213 in words is "one hundred twenty-one trillion, four hundred twenty billion, three hundred forty-two million, thirteen thousand, two hundred thirteen".