20102210211111 has 8 divisors (see below), whose sum is σ = 30631939369344. Its totient is φ = 11486977263480.

The previous prime is 20102210211103. The next prime is 20102210211121. The reversal of 20102210211111 is 11111201220102.

It is a happy number.

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

It is not a de Polignac number, because 20102210211111 - 2³ = 20102210211103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102210211121) 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 7 ways as a sum of consecutive naturals, for example, 478624052625 + ... + 478624052666.

It is an arithmetic number, because the mean of its divisors is an integer number (3828992421168).

Almost surely, 2^{20102210211111} is an apocalyptic number.

20102210211111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20102210211111 is a deficient number, since it is larger than the sum of its proper divisors (10529729158233).

20102210211111 is an equidigital number, since it uses as much as digits as its factorization.

20102210211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957248105301.

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

Adding to 20102210211111 its reverse (11111201220102), we get a palindrome (31213411431213).

The spelling of 20102210211111 in words is "twenty trillion, one hundred two billion, two hundred ten million, two hundred eleven thousand, one hundred eleven".