20011012211 has 8 divisors (see below), whose sum is σ = 21554089920. Its totient is φ = 18516921192.

The previous prime is 20011012157. The next prime is 20011012267. The reversal of 20011012211 is 11221011002.

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

It is a cyclic number.

It is not a de Polignac number, because 20011012211 - 2¹⁰ = 20011011187 is a prime.

It is a super-2 number, since 2×20011012211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20011012192 and 20011012201.

It is not an unprimeable number, because it can be changed into a prime (20011012291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12245825 + ... + 12247458.

It is an arithmetic number, because the mean of its divisors is an integer number (2694261240).

Almost surely, 2^20011012211 is an apocalyptic number.

20011012211 is a deficient number, since it is larger than the sum of its proper divisors (1543077709).

20011012211 is a wasteful number, since it uses less digits than its factorization.

20011012211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24493345.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20011012211 its reverse (11221011002), we get a palindrome (31232023213).

The spelling of 20011012211 in words is "twenty billion, eleven million, twelve thousand, two hundred eleven".