22021021354 has 8 divisors (see below), whose sum is σ = 33033007620. Its totient is φ = 11010018816.

The previous prime is 22021021333. The next prime is 22021021381. The reversal of 22021021354 is 45312012022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21513555625 + 507465729 = 146675^2 + 22527^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187159 + ... + 281194.

Almost surely, 2^22021021354 is an apocalyptic number.

22021021354 is a deficient number, since it is larger than the sum of its proper divisors (11011986266).

22021021354 is a wasteful number, since it uses less digits than its factorization.

22021021354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491864.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 22021021354 its reverse (45312012022), we get a palindrome (67333033376).

The spelling of 22021021354 in words is "twenty-two billion, twenty-one million, twenty-one thousand, three hundred fifty-four".