22220350521 has 8 divisors (see below), whose sum is σ = 29654853120. Its totient is φ = 14799707472.

The previous prime is 22220350519. The next prime is 22220350553. The reversal of 22220350521 is 12505302222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22220350521 - 2¹ = 22220350519 is a prime.

It is a super-2 number, since 2×22220350521² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22220350491 and 22220350500.

It is not an unprimeable number, because it can be changed into a prime (22220350591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3461145 + ... + 3467558.

It is an arithmetic number, because the mean of its divisors is an integer number (3706856640).

Almost surely, 2^22220350521 is an apocalyptic number.

It is an amenable number.

22220350521 is a deficient number, since it is larger than the sum of its proper divisors (7434502599).

22220350521 is a wasteful number, since it uses less digits than its factorization.

22220350521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6929775.

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 22220350521 its reverse (12505302222), we get a palindrome (34725652743).

The spelling of 22220350521 in words is "twenty-two billion, two hundred twenty million, three hundred fifty thousand, five hundred twenty-one".