20202021121000 has 64 divisors (see below), whose sum is σ = 47274445866960. Its totient is φ = 8080515040000.

The previous prime is 20202021120991. The next prime is 20202021121091. The reversal of 20202021121000 is 12112020202.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 6867093624196 + 13334927496804 = 2620514^2 + 3651702^2 .

It is a super-3 number, since 3×20202021121000³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28308570 + ... + 29013430.

Almost surely, 2^{20202021121000} is an apocalyptic number.

20202021121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202021121000 is an abundant number, since it is smaller than the sum of its proper divisors (27072424745960).

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

20202021121000 is a wasteful number, since it uses less digits than its factorization.

20202021121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733543 (or 733529 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20202021121000 its reverse (12112020202), we get a palindrome (20214133141202).

The spelling of 20202021121000 in words is "twenty trillion, two hundred two billion, twenty-one million, one hundred twenty-one thousand".