20221201021020 has 24 divisors (see below), whose sum is σ = 56619362859024. Its totient is φ = 5392320272256.

The previous prime is 20221201020971. The next prime is 20221201021027. The reversal of 20221201021020 is 2012010212202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221201021027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168510008449 + ... + 168510008568.

It is an arithmetic number, because the mean of its divisors is an integer number (2359140119126).

Almost surely, 2^{20221201021020} is an apocalyptic number.

20221201021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221201021020 is an abundant number, since it is smaller than the sum of its proper divisors (36398161838004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20221201021020 is a wasteful number, since it uses less digits than its factorization.

20221201021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337020017029 (or 337020017027 counting only the distinct ones).

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

Adding to 20221201021020 its reverse (2012010212202), we get a palindrome (22233211233222).

The spelling of 20221201021020 in words is "twenty trillion, two hundred twenty-one billion, two hundred one million, twenty-one thousand, twenty".