20111222102 has 8 divisors (see below), whose sum is σ = 30215569800. Its totient is φ = 10039365504.

The previous prime is 20111222083. The next prime is 20111222107. The reversal of 20111222102 is 20122211102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20111222102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111222107) 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, 8121227 + ... + 8123702.

It is an arithmetic number, because the mean of its divisors is an integer number (3776946225).

Almost surely, 2^20111222102 is an apocalyptic number.

20111222102 is a deficient number, since it is larger than the sum of its proper divisors (10104347698).

20111222102 is a wasteful number, since it uses less digits than its factorization.

20111222102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16245550.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20111222102 its reverse (20122211102), we get a palindrome (40233433204).

The spelling of 20111222102 in words is "twenty billion, one hundred eleven million, two hundred twenty-two thousand, one hundred two".