121605066126 has 32 divisors (see below), whose sum is σ = 270263596800. Its totient is φ = 40530504600.

The previous prime is 121605066119. The next prime is 121605066127. The reversal of 121605066126 is 621660506121.

121605066126 is a `hidden beast` number, since 1 + 21 + 6 + 0 + 506 + 6 + 126 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121605066127) 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, 382401 + ... + 624051.

It is an arithmetic number, because the mean of its divisors is an integer number (8445737400).

Almost surely, 2^121605066126 is an apocalyptic number.

121605066126 is an abundant number, since it is smaller than the sum of its proper divisors (148658530674).

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

121605066126 is a wasteful number, since it uses less digits than its factorization.

121605066126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250981 (or 250975 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 121605066126 in words is "one hundred twenty-one billion, six hundred five million, sixty-six thousand, one hundred twenty-six".