20202120211103 has 4 divisors (see below), whose sum is σ = 20204302581840. Its totient is φ = 20199937840368.

The previous prime is 20202120211093. The next prime is 20202120211139. The reversal of 20202120211103 is 30111202120202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20202120211103 - 2¹² = 20202120207007 is a prime.

It is a super-2 number, since 2×20202120211103² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202120211183) 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, 1091171483 + ... + 1091189996.

It is an arithmetic number, because the mean of its divisors is an integer number (5051075645460).

Almost surely, 2^{20202120211103} is an apocalyptic number.

20202120211103 is a deficient number, since it is larger than the sum of its proper divisors (2182370737).

20202120211103 is an equidigital number, since it uses as much as digits as its factorization.

20202120211103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182370736.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20202120211103 its reverse (30111202120202), we get a palindrome (50313322331305).

The spelling of 20202120211103 in words is "twenty trillion, two hundred two billion, one hundred twenty million, two hundred eleven thousand, one hundred three".