121421302214242 has 16 divisors (see below), whose sum is σ = 182205976707360. Its totient is φ = 60685977529408.

The previous prime is 121421302214213. The next prime is 121421302214263. The reversal of 121421302214242 is 242412203124121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321758313 + ... + 322135459.

It is an arithmetic number, because the mean of its divisors is an integer number (11387873544210).

Almost surely, 2^{121421302214242} is an apocalyptic number.

121421302214242 is a deficient number, since it is larger than the sum of its proper divisors (60784674493118).

121421302214242 is a wasteful number, since it uses less digits than its factorization.

121421302214242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442145.

The product of its (nonzero) digits is 12288, while the sum is 31.

Adding to 121421302214242 its reverse (242412203124121), we get a palindrome (363833505338363).

The spelling of 121421302214242 in words is "one hundred twenty-one trillion, four hundred twenty-one billion, three hundred two million, two hundred fourteen thousand, two hundred forty-two".