20021203411 has 6 divisors (see below), whose sum is σ = 22006777436. Its totient is φ = 18201093900.

The previous prime is 20021203381. The next prime is 20021203439. The reversal of 20021203411 is 11430212002.

It is not a de Polignac number, because 20021203411 - 2⁵ = 20021203379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021206411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82732125 + ... + 82732366.

Almost surely, 2^20021203411 is an apocalyptic number.

20021203411 is a deficient number, since it is larger than the sum of its proper divisors (1985574025).

20021203411 is a wasteful number, since it uses less digits than its factorization.

20021203411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165464513 (or 165464502 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20021203411 its reverse (11430212002), we get a palindrome (31451415413).

The spelling of 20021203411 in words is "twenty billion, twenty-one million, two hundred three thousand, four hundred eleven".