22021135450 has 24 divisors (see below), whose sum is σ = 41477791680. Its totient is φ = 8696953200.

The previous prime is 22021135403. The next prime is 22021135517. The reversal of 22021135450 is 5453112022.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2783536 + ... + 2791435.

It is an arithmetic number, because the mean of its divisors is an integer number (1728241320).

Almost surely, 2^22021135450 is an apocalyptic number.

22021135450 is a deficient number, since it is larger than the sum of its proper divisors (19456656230).

22021135450 is a wasteful number, since it uses less digits than its factorization.

22021135450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5575062 (or 5575057 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 22021135450 its reverse (5453112022), we get a palindrome (27474247472).

The spelling of 22021135450 in words is "twenty-two billion, twenty-one million, one hundred thirty-five thousand, four hundred fifty".