20012220011 has 8 divisors (see below), whose sum is σ = 22990854144. Its totient is φ = 17063522280.

The previous prime is 20012220001. The next prime is 20012220023. The reversal of 20012220011 is 11002221002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20012220011 - 2⁶ = 20012219947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20012219974 and 20012220001.

It is not an unprimeable number, because it can be changed into a prime (20012220001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7482665 + ... + 7485338.

It is an arithmetic number, because the mean of its divisors is an integer number (2873856768).

Almost surely, 2^20012220011 is an apocalyptic number.

20012220011 is a deficient number, since it is larger than the sum of its proper divisors (2978634133).

20012220011 is a wasteful number, since it uses less digits than its factorization.

20012220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14968201.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20012220011 its reverse (11002221002), we get a palindrome (31014441013).

Subtracting from 20012220011 its reverse (11002221002), we obtain a palindrome (9009999009).

The spelling of 20012220011 in words is "twenty billion, twelve million, two hundred twenty thousand, eleven".