20303021011 has 12 divisors (see below), whose sum is σ = 25125633552. Its totient is φ = 16063927776.

The previous prime is 20303020999. The next prime is 20303021029. The reversal of 20303021011 is 11012030302.

It is not a de Polignac number, because 20303021011 - 2⁷ = 20303020883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20303020982 and 20303021000.

It is not an unprimeable number, because it can be changed into a prime (20303021051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8579976 + ... + 8582341.

It is an arithmetic number, because the mean of its divisors is an integer number (2093802796).

Almost surely, 2^20303021011 is an apocalyptic number.

20303021011 is a deficient number, since it is larger than the sum of its proper divisors (4822612541).

20303021011 is a wasteful number, since it uses less digits than its factorization.

20303021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17162350 (or 17162337 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20303021011 its reverse (11012030302), we get a palindrome (31315051313).

The spelling of 20303021011 in words is "twenty billion, three hundred three million, twenty-one thousand, eleven".