20202121201104 has 80 divisors (see below), whose sum is σ = 57990382842240. Its totient is φ = 6733713761280.

The previous prime is 20202121201099. The next prime is 20202121201147. The reversal of 20202121201104 is 40110212120202.

It is a super-2 number, since 2×20202121201104² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7864864 + ... + 10112384.

It is an arithmetic number, because the mean of its divisors is an integer number (724879785528).

Almost surely, 2^{20202121201104} is an apocalyptic number.

20202121201104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20202121201104 is an abundant number, since it is smaller than the sum of its proper divisors (37788261641136).

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

20202121201104 is a wasteful number, since it uses less digits than its factorization.

20202121201104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268345 (or 2268333 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20202121201104 its reverse (40110212120202), we get a palindrome (60312333321306).

The spelling of 20202121201104 in words is "twenty trillion, two hundred two billion, one hundred twenty-one million, two hundred one thousand, one hundred four".