22121063 has 4 divisors (see below), whose sum is σ = 23422320. Its totient is φ = 20819808.

The previous prime is 22121059. The next prime is 22121083. The reversal of 22121063 is 36012122.

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 22121063 - 2² = 22121059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1301239 = 22121063 / (2 + 2 + 1 + 2 + 1 + 0 + 6 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121003) 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, 650603 + ... + 650636.

It is an arithmetic number, because the mean of its divisors is an integer number (5855580).

Almost surely, 2^22121063 is an apocalyptic number.

22121063 is a deficient number, since it is larger than the sum of its proper divisors (1301257).

22121063 is a wasteful number, since it uses less digits than its factorization.

22121063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301256.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 22121063 is about 4703.3034135595. The cubic root of 22121063 is about 280.7169678377.

Adding to 22121063 its reverse (36012122), we get a palindrome (58133185).

The spelling of 22121063 in words is "twenty-two million, one hundred twenty-one thousand, sixty-three".