20021111301203 has 4 divisors (see below), whose sum is σ = 20033341670160. Its totient is φ = 20008880932248.

The previous prime is 20021111301181. The next prime is 20021111301239. The reversal of 20021111301203 is 30210311112002.

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 20021111301203 - 2²² = 20021107106899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021111301253) 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, 6115182023 + ... + 6115185296.

It is an arithmetic number, because the mean of its divisors is an integer number (5008335417540).

Almost surely, 2^{20021111301203} is an apocalyptic number.

20021111301203 is a deficient number, since it is larger than the sum of its proper divisors (12230368957).

20021111301203 is a wasteful number, since it uses less digits than its factorization.

20021111301203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12230368956.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20021111301203 its reverse (30210311112002), we get a palindrome (50231422413205).

The spelling of 20021111301203 in words is "twenty trillion, twenty-one billion, one hundred eleven million, three hundred one thousand, two hundred three".