20021202201020 has 24 divisors (see below), whose sum is σ = 42416600066064. Its totient is φ = 7937609367296.

The previous prime is 20021202200957. The next prime is 20021202201031. The reversal of 20021202201020 is 2010220212002.

It is a junction number, because it is equal to n+sod(n) for n = 20021202200986 and 20021202201004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4429467254 + ... + 4429471773.

It is an arithmetic number, because the mean of its divisors is an integer number (1767358336086).

Almost surely, 2^{20021202201020} is an apocalyptic number.

20021202201020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021202201020 is an abundant number, since it is smaller than the sum of its proper divisors (22395397865044).

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

20021202201020 is a wasteful number, since it uses less digits than its factorization.

20021202201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8858939149 (or 8858939147 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20021202201020 its reverse (2010220212002), we get a palindrome (22031422413022).

The spelling of 20021202201020 in words is "twenty trillion, twenty-one billion, two hundred two million, two hundred one thousand, twenty".