20102111122101 has 4 divisors (see below), whose sum is σ = 26802814829472. Its totient is φ = 13401407414732.

The previous prime is 20102111122099. The next prime is 20102111122109. The reversal of 20102111122101 is 10122111120102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20102111122101 - 2¹ = 20102111122099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102111122109) 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, 3350351853681 + ... + 3350351853686.

It is an arithmetic number, because the mean of its divisors is an integer number (6700703707368).

Almost surely, 2^{20102111122101} is an apocalyptic number.

It is an amenable number.

20102111122101 is a deficient number, since it is larger than the sum of its proper divisors (6700703707371).

20102111122101 is an equidigital number, since it uses as much as digits as its factorization.

20102111122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700703707370.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20102111122101 its reverse (10122111120102), we get a palindrome (30224222242203).

The spelling of 20102111122101 in words is "twenty trillion, one hundred two billion, one hundred eleven million, one hundred twenty-two thousand, one hundred one".