121201023420242 has 8 divisors (see below), whose sum is σ = 181805449947132. Its totient is φ = 60599206771200.

The previous prime is 121201023420223. The next prime is 121201023420247. The reversal of 121201023420242 is 242024320102121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 121108066117921 + 92957302321 = 11004911^2 + 304889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×121201023420242² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121201023420247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652353359 + ... + 652539122.

Almost surely, 2^{121201023420242} is an apocalyptic number.

121201023420242 is a deficient number, since it is larger than the sum of its proper divisors (60604426526890).

121201023420242 is a wasteful number, since it uses less digits than its factorization.

121201023420242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304938924.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 121201023420242 its reverse (242024320102121), we get a palindrome (363225343522363).

The spelling of 121201023420242 in words is "one hundred twenty-one trillion, two hundred one billion, twenty-three million, four hundred twenty thousand, two hundred forty-two".