121263045406 has 16 divisors (see below), whose sum is σ = 200967912864. Its totient is φ = 54583876864.

The previous prime is 121263045403. The next prime is 121263045419. The reversal of 121263045406 is 604540362121.

It is a super-2 number, since 2×121263045406² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121263045403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77533135 + ... + 77534698.

It is an arithmetic number, because the mean of its divisors is an integer number (12560494554).

Almost surely, 2^121263045406 is an apocalyptic number.

121263045406 is a deficient number, since it is larger than the sum of its proper divisors (79704867458).

121263045406 is a wasteful number, since it uses less digits than its factorization.

121263045406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155067875.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 121263045406 in words is "one hundred twenty-one billion, two hundred sixty-three million, forty-five thousand, four hundred six".