20103221111 has 8 divisors (see below), whose sum is σ = 21236065920. Its totient is φ = 18977854392.

The previous prime is 20103221107. The next prime is 20103221113. The reversal of 20103221111 is 11112230102.

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

It is a cyclic number.

It is not a de Polignac number, because 20103221111 - 2² = 20103221107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103221113) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1863995 + ... + 1874748.

It is an arithmetic number, because the mean of its divisors is an integer number (2654508240).

Almost surely, 2^20103221111 is an apocalyptic number.

20103221111 is a deficient number, since it is larger than the sum of its proper divisors (1132844809).

20103221111 is a wasteful number, since it uses less digits than its factorization.

20103221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3739045.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20103221111 its reverse (11112230102), we get a palindrome (31215451213).

The spelling of 20103221111 in words is "twenty billion, one hundred three million, two hundred twenty-one thousand, one hundred eleven".