20201120121101 has 4 divisors (see below), whose sum is σ = 21264336969600. Its totient is φ = 19137903272604.

The previous prime is 20201120121067. The next prime is 20201120121197. The reversal of 20201120121101 is 10112102110202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20201120121101 - 2¹⁸ = 20201119858957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201120421101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531608424221 + ... + 531608424258.

It is an arithmetic number, because the mean of its divisors is an integer number (5316084242400).

Almost surely, 2^{20201120121101} is an apocalyptic number.

It is an amenable number.

20201120121101 is a deficient number, since it is larger than the sum of its proper divisors (1063216848499).

20201120121101 is a wasteful number, since it uses less digits than its factorization.

20201120121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063216848498.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20201120121101 its reverse (10112102110202), we get a palindrome (30313222231303).

The spelling of 20201120121101 in words is "twenty trillion, two hundred one billion, one hundred twenty million, one hundred twenty-one thousand, one hundred one".