20010220011 has 6 divisors (see below), whose sum is σ = 28903651140. Its totient is φ = 13340146668.

The previous prime is 20010220007. The next prime is 20010220051. The reversal of 20010220011 is 11002201002.

It is not a de Polignac number, because 20010220011 - 2² = 20010220007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 2223357779 = 20010220011 / (2 + 0 + 0 + 1 + 0 + 2 + 2 + 0 + 0 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 20010219975 and 20010220002.

It is not an unprimeable number, because it can be changed into a prime (20010220051) 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, 1111678881 + ... + 1111678898.

It is an arithmetic number, because the mean of its divisors is an integer number (4817275190).

Almost surely, 2^20010220011 is an apocalyptic number.

20010220011 is a deficient number, since it is larger than the sum of its proper divisors (8893431129).

20010220011 is a wasteful number, since it uses less digits than its factorization.

20010220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223357785 (or 2223357782 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20010220011 its reverse (11002201002), we get a palindrome (31012421013).

The spelling of 20010220011 in words is "twenty billion, ten million, two hundred twenty thousand, eleven".