20221221201011 has 8 divisors (see below), whose sum is σ = 20565012692400. Its totient is φ = 19877465007360.

The previous prime is 20221221200989. The next prime is 20221221201029. The reversal of 20221221201011 is 11010212212202.

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 20221221201011 - 2¹⁰ = 20221221199987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20221221201061) 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, 7667666 + ... + 9961703.

It is an arithmetic number, because the mean of its divisors is an integer number (2570626586550).

Almost surely, 2^{20221221201011} is an apocalyptic number.

20221221201011 is a deficient number, since it is larger than the sum of its proper divisors (343791491389).

20221221201011 is a wasteful number, since it uses less digits than its factorization.

20221221201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17648869.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20221221201011 its reverse (11010212212202), we get a palindrome (31231433413213).

The spelling of 20221221201011 in words is "twenty trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred one thousand, eleven".