20201110122021 has 32 divisors (see below), whose sum is σ = 28597785245568. Its totient is φ = 12640290969600.

The previous prime is 20201110121963. The next prime is 20201110122031. The reversal of 20201110122021 is 12022101110202.

It is not a de Polignac number, because 20201110122021 - 2⁹ = 20201110121509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201110122031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 330988710 + ... + 331049736.

It is an arithmetic number, because the mean of its divisors is an integer number (893680788924).

Almost surely, 2^{20201110122021} is an apocalyptic number.

It is an amenable number.

20201110122021 is a deficient number, since it is larger than the sum of its proper divisors (8396675123547).

20201110122021 is a wasteful number, since it uses less digits than its factorization.

20201110122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78821.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20201110122021 its reverse (12022101110202), we get a palindrome (32223211232223).

The spelling of 20201110122021 in words is "twenty trillion, two hundred one billion, one hundred ten million, one hundred twenty-two thousand, twenty-one".