121670100066 has 16 divisors (see below), whose sum is σ = 243529880544. Its totient is φ = 40525086624.

The previous prime is 121670100049. The next prime is 121670100091. The reversal of 121670100066 is 660001076121.

It is a super-2 number, since 2×121670100066² (a number of 23 digits) contains 22 as substring.

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, 7895011 + ... + 7910406.

It is an arithmetic number, because the mean of its divisors is an integer number (15220617534).

Almost surely, 2^121670100066 is an apocalyptic number.

121670100066 is an abundant number, since it is smaller than the sum of its proper divisors (121859780478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121670100066 is a wasteful number, since it uses less digits than its factorization.

121670100066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15806705.

The product of its (nonzero) digits is 3024, while the sum is 30.

Adding to 121670100066 its reverse (660001076121), we get a palindrome (781671176187).

The spelling of 121670100066 in words is "one hundred twenty-one billion, six hundred seventy million, one hundred thousand, sixty-six".