20102111201012 has 12 divisors (see below), whose sum is σ = 35187443372676. Its totient is φ = 10048555951680.

The previous prime is 20102111200931. The next prime is 20102111201017. The reversal of 20102111201012 is 21010211120102.

It can be written as a sum of positive squares in 2 ways, for example, as 4907660424976 + 15194450776036 = 2215324^2 + 3898006^2 .

It is a super-2 number, since 2×20102111201012² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102111201017) 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 3 ways as a sum of consecutive naturals, for example, 624894113 + ... + 624926280.

It is an arithmetic number, because the mean of its divisors is an integer number (2932286947723).

Almost surely, 2^{20102111201012} is an apocalyptic number.

It is an amenable number.

20102111201012 is a deficient number, since it is larger than the sum of its proper divisors (15085332171664).

20102111201012 is a wasteful number, since it uses less digits than its factorization.

20102111201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249824418 (or 1249824416 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20102111201012 its reverse (21010211120102), we get a palindrome (41112322321114).

The spelling of 20102111201012 in words is "twenty trillion, one hundred two billion, one hundred eleven million, two hundred one thousand, twelve".