20102201111 has 2 divisors, whose sum is σ = 20102201112. Its totient is φ = 20102201110.

The previous prime is 20102201101. The next prime is 20102201117. The reversal of 20102201111 is 11110220102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20102201111 - 2²⁶ = 20035092247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20102201092 and 20102201101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20102201117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051100555 + 10051100556.

It is an arithmetic number, because the mean of its divisors is an integer number (10051100556).

Almost surely, 2^20102201111 is an apocalyptic number.

20102201111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102201111 is an equidigital number, since it uses as much as digits as its factorization.

20102201111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20102201111 its reverse (11110220102), we get a palindrome (31212421213).

The spelling of 20102201111 in words is "twenty billion, one hundred two million, two hundred one thousand, one hundred eleven".