20221221111193 has 8 divisors (see below), whose sum is σ = 20379257138240. Its totient is φ = 20063694057840.

The previous prime is 20221221111191. The next prime is 20221221111211. The reversal of 20221221111193 is 39111112212202.

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

It is a cyclic number.

It is not a de Polignac number, because 20221221111193 - 2¹ = 20221221111191 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20221221111191) 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, 127163655 + ... + 127322572.

It is an arithmetic number, because the mean of its divisors is an integer number (2547407142280).

Almost surely, 2^{20221221111193} is an apocalyptic number.

It is an amenable number.

20221221111193 is a deficient number, since it is larger than the sum of its proper divisors (158036027047).

20221221111193 is a wasteful number, since it uses less digits than its factorization.

20221221111193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254486847.

The product of its (nonzero) digits is 864, while the sum is 28.

Adding to 20221221111193 its reverse (39111112212202), we get a palindrome (59332333323395).

The spelling of 20221221111193 in words is "twenty trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred eleven thousand, one hundred ninety-three".