20203220011 has 32 divisors (see below), whose sum is σ = 23817830400. Its totient is φ = 16967905920.

The previous prime is 20203220003. The next prime is 20203220017. The reversal of 20203220011 is 11002230202.

It is not a de Polignac number, because 20203220011 - 2³ = 20203220003 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 20203219973 and 20203220000.

It is not an unprimeable number, because it can be changed into a prime (20203220017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1360750 + ... + 1375516.

It is an arithmetic number, because the mean of its divisors is an integer number (744307200).

Almost surely, 2^20203220011 is an apocalyptic number.

20203220011 is a deficient number, since it is larger than the sum of its proper divisors (3614610389).

20203220011 is a wasteful number, since it uses less digits than its factorization.

20203220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15019.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20203220011 its reverse (11002230202), we get a palindrome (31205450213).

The spelling of 20203220011 in words is "twenty billion, two hundred three million, two hundred twenty thousand, eleven".