20102222112101 has 16 divisors (see below), whose sum is σ = 21336515700480. Its totient is φ = 18873695178240.

The previous prime is 20102222112073. The next prime is 20102222112143. The reversal of 20102222112101 is 10121122220102.

It is a cyclic number.

It is not a de Polignac number, because 20102222112101 - 2¹⁰ = 20102222111077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20102222112101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102222112701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66223865 + ... + 66526721.

It is an arithmetic number, because the mean of its divisors is an integer number (1333532231280).

Almost surely, 2^{20102222112101} is an apocalyptic number.

It is an amenable number.

20102222112101 is a deficient number, since it is larger than the sum of its proper divisors (1234293588379).

20102222112101 is a wasteful number, since it uses less digits than its factorization.

20102222112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312364.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20102222112101 its reverse (10121122220102), we get a palindrome (30223344332203).

The spelling of 20102222112101 in words is "twenty trillion, one hundred two billion, two hundred twenty-two million, one hundred twelve thousand, one hundred one".