20221211021020 has 48 divisors (see below), whose sum is σ = 42570411156000. Its totient is φ = 8068334904576.

The previous prime is 20221211020999. The next prime is 20221211021023. The reversal of 20221211021020 is 2012011212202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20221211020985 and 20221211021003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221211021023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19995474 + ... + 20982406.

It is an arithmetic number, because the mean of its divisors is an integer number (886883565750).

Almost surely, 2^{20221211021020} is an apocalyptic number.

20221211021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221211021020 is an abundant number, since it is smaller than the sum of its proper divisors (22349200134980).

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

20221211021020 is a wasteful number, since it uses less digits than its factorization.

20221211021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989494 (or 989492 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20221211021020 its reverse (2012011212202), we get a palindrome (22233222233222).

The spelling of 20221211021020 in words is "twenty trillion, two hundred twenty-one billion, two hundred eleven million, twenty-one thousand, twenty".