121201424121 has 16 divisors (see below), whose sum is σ = 162134553024. Its totient is φ = 80534816064.

The previous prime is 121201424111. The next prime is 121201424159. The reversal of 121201424121 is 121424102121.

It is not a de Polignac number, because 121201424121 - 2¹⁴ = 121201407737 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121201424111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2639071 + ... + 2684603.

It is an arithmetic number, because the mean of its divisors is an integer number (10133409564).

Almost surely, 2^121201424121 is an apocalyptic number.

It is an amenable number.

121201424121 is a deficient number, since it is larger than the sum of its proper divisors (40933128903).

121201424121 is a wasteful number, since it uses less digits than its factorization.

121201424121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48440.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 121201424121 its reverse (121424102121), we get a palindrome (242625526242).

The spelling of 121201424121 in words is "one hundred twenty-one billion, two hundred one million, four hundred twenty-four thousand, one hundred twenty-one".