20102102111222 has 4 divisors (see below), whose sum is σ = 30153153166836. Its totient is φ = 10051051055610.

The previous prime is 20102102111197. The next prime is 20102102111249. The reversal of 20102102111222 is 22211120120102.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20102102111222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025525527804 + ... + 5025525527807.

It is an arithmetic number, because the mean of its divisors is an integer number (7538288291709).

Almost surely, 2^{20102102111222} is an apocalyptic number.

20102102111222 is a deficient number, since it is larger than the sum of its proper divisors (10051051055614).

20102102111222 is a wasteful number, since it uses less digits than its factorization.

20102102111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10051051055613.

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

Adding to 20102102111222 its reverse (22211120120102), we get a palindrome (42313222231324).

The spelling of 20102102111222 in words is "twenty trillion, one hundred two billion, one hundred two million, one hundred eleven thousand, two hundred twenty-two".