202012221021103 has 4 divisors (see below), whose sum is σ = 204857463570768. Its totient is φ = 199166978471440.

The previous prime is 202012221021067. The next prime is 202012221021137. The reversal of 202012221021103 is 301120122210202.

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 202012221021103 - 2²⁹ = 202011684150191 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 (202012221021803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1422621274726 + ... + 1422621274867.

It is an arithmetic number, because the mean of its divisors is an integer number (51214365892692).

Almost surely, 2^{202012221021103} is an apocalyptic number.

202012221021103 is a deficient number, since it is larger than the sum of its proper divisors (2845242549665).

202012221021103 is an equidigital number, since it uses as much as digits as its factorization.

202012221021103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2845242549664.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 202012221021103 its reverse (301120122210202), we get a palindrome (503132343231305).

The spelling of 202012221021103 in words is "two hundred two trillion, twelve billion, two hundred twenty-one million, twenty-one thousand, one hundred three".