20221221201 has 8 divisors (see below), whose sum is σ = 26963043744. Its totient is φ = 13480106400.

The previous prime is 20221221187. The next prime is 20221221233. The reversal of 20221221201 is 10212212202.

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

It is not a de Polignac number, because 20221221201 - 2¹³ = 20221213009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20221221301) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 106231 + ... + 227436.

It is an arithmetic number, because the mean of its divisors is an integer number (3370380468).

Almost surely, 2^20221221201 is an apocalyptic number.

It is an amenable number.

20221221201 is a deficient number, since it is larger than the sum of its proper divisors (6741822543).

20221221201 is a wasteful number, since it uses less digits than its factorization.

20221221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353871.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20221221201 its reverse (10212212202), we get a palindrome (30433433403).

The spelling of 20221221201 in words is "twenty billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred one".