20101102021011 has 24 divisors (see below), whose sum is σ = 29495088850752. Its totient is φ = 12167754953200.

The previous prime is 20101102020949. The next prime is 20101102021019. The reversal of 20101102021011 is 11012020110102.

It is not a de Polignac number, because 20101102021011 - 2¹³ = 20101102012819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20101102021019) 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 23 ways as a sum of consecutive naturals, for example, 33179205 + ... + 33779606.

It is an arithmetic number, because the mean of its divisors is an integer number (1228962035448).

Almost surely, 2^{20101102021011} is an apocalyptic number.

20101102021011 is a deficient number, since it is larger than the sum of its proper divisors (9393986829741).

20101102021011 is a wasteful number, since it uses less digits than its factorization.

20101102021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66959663 (or 66959652 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20101102021011 its reverse (11012020110102), we get a palindrome (31113122131113).

The spelling of 20101102021011 in words is "twenty trillion, one hundred one billion, one hundred two million, twenty-one thousand, eleven".