20121020211303 has 16 divisors (see below), whose sum is σ = 32518820544000. Its totient is φ = 12194557703640.

The previous prime is 20121020211293. The next prime is 20121020211311. The reversal of 20121020211303 is 30311202012102.

It is not a de Polignac number, because 20121020211303 - 2¹³ = 20121020203111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121020211403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33873771103 + ... + 33873771696.

It is an arithmetic number, because the mean of its divisors is an integer number (2032426284000).

Almost surely, 2^{20121020211303} is an apocalyptic number.

20121020211303 is a deficient number, since it is larger than the sum of its proper divisors (12397800332697).

20121020211303 is a wasteful number, since it uses less digits than its factorization.

20121020211303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67747542819 (or 67747542813 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20121020211303 its reverse (30311202012102), we get a palindrome (50432222223405).

The spelling of 20121020211303 in words is "twenty trillion, one hundred twenty-one billion, twenty million, two hundred eleven thousand, three hundred three".