22215333551 has 4 divisors (see below), whose sum is σ = 22320619704. Its totient is φ = 22110047400.

The previous prime is 22215333533. The next prime is 22215333557. The reversal of 22215333551 is 15533351222.

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 22215333551 - 2¹⁴ = 22215317167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22215333557) 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 3 ways as a sum of consecutive naturals, for example, 52642760 + ... + 52643181.

It is an arithmetic number, because the mean of its divisors is an integer number (5580154926).

Almost surely, 2^22215333551 is an apocalyptic number.

22215333551 is a deficient number, since it is larger than the sum of its proper divisors (105286153).

22215333551 is a wasteful number, since it uses less digits than its factorization.

22215333551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105286152.

The product of its digits is 27000, while the sum is 32.

Adding to 22215333551 its reverse (15533351222), we get a palindrome (37748684773).

The spelling of 22215333551 in words is "twenty-two billion, two hundred fifteen million, three hundred thirty-three thousand, five hundred fifty-one".