20101022011 has 12 divisors (see below), whose sum is σ = 23766150000. Its totient is φ = 16946994960.

The previous prime is 20101022009. The next prime is 20101022069. The reversal of 20101022011 is 11022010102.

It is not a de Polignac number, because 20101022011 - 2¹ = 20101022009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20101022311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3359511 + ... + 3365488.

It is an arithmetic number, because the mean of its divisors is an integer number (1980512500).

Almost surely, 2^20101022011 is an apocalyptic number.

20101022011 is a deficient number, since it is larger than the sum of its proper divisors (3665127989).

20101022011 is an equidigital number, since it uses as much as digits as its factorization.

20101022011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6725074 (or 6725067 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20101022011 its reverse (11022010102), we get a palindrome (31123032113).

The spelling of 20101022011 in words is "twenty billion, one hundred one million, twenty-two thousand, eleven".