121406266356 has 24 divisors (see below), whose sum is σ = 283385092704. Its totient is φ = 40453926240.

The previous prime is 121406266351. The next prime is 121406266447. The reversal of 121406266356 is 653662604121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121406266351) 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, 1819515 + ... + 1885058.

It is an arithmetic number, because the mean of its divisors is an integer number (11807712196).

Almost surely, 2^121406266356 is an apocalyptic number.

It is an amenable number.

121406266356 is an abundant number, since it is smaller than the sum of its proper divisors (161978826348).

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

121406266356 is a wasteful number, since it uses less digits than its factorization.

121406266356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3707311 (or 3707309 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 121406266356 in words is "one hundred twenty-one billion, four hundred six million, two hundred sixty-six thousand, three hundred fifty-six".