20102202210111 has 32 divisors (see below), whose sum is σ = 30827939132928. Its totient is φ = 11413472503680.

The previous prime is 20102202210091. The next prime is 20102202210143. The reversal of 20102202210111 is 11101220220102.

It is not a de Polignac number, because 20102202210111 - 2⁹ = 20102202209599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102202230111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151110856 + ... + 151243826.

It is an arithmetic number, because the mean of its divisors is an integer number (963373097904).

Almost surely, 2^{20102202210111} is an apocalyptic number.

20102202210111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20102202210111 is a deficient number, since it is larger than the sum of its proper divisors (10725736922817).

20102202210111 is a wasteful number, since it uses less digits than its factorization.

20102202210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178991.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20102202210111 its reverse (11101220220102), we get a palindrome (31203422430213).

The spelling of 20102202210111 in words is "twenty trillion, one hundred two billion, two hundred two million, two hundred ten thousand, one hundred eleven".