121626563 has 4 divisors (see below), whose sum is σ = 121649640. Its totient is φ = 121603488.

The previous prime is 121626559. The next prime is 121626569. The reversal of 121626563 is 365626121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121626563 - 2² = 121626559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121626569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 683 + ... + 15611.

It is an arithmetic number, because the mean of its divisors is an integer number (30412410).

Almost surely, 2^121626563 is an apocalyptic number.

121626563 is a deficient number, since it is larger than the sum of its proper divisors (23077).

121626563 is an equidigital number, since it uses as much as digits as its factorization.

121626563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23076.

The product of its digits is 12960, while the sum is 32.

The square root of 121626563 is about 11028.4433625059. The cubic root of 121626563 is about 495.4610037115.

The spelling of 121626563 in words is "one hundred twenty-one million, six hundred twenty-six thousand, five hundred sixty-three".