121451206406 has 16 divisors (see below), whose sum is σ = 187122700800. Its totient is φ = 59077362240.

The previous prime is 121451206403. The next prime is 121451206417. The reversal of 121451206406 is 604602154121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121451206403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560570 + ... + 746418.

It is an arithmetic number, because the mean of its divisors is an integer number (11695168800).

Almost surely, 2^121451206406 is an apocalyptic number.

121451206406 is a deficient number, since it is larger than the sum of its proper divisors (65671494394).

121451206406 is a wasteful number, since it uses less digits than its factorization.

121451206406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194719.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 121451206406 in words is "one hundred twenty-one billion, four hundred fifty-one million, two hundred six thousand, four hundred six".