102220111 has 8 divisors (see below), whose sum is σ = 116910080. Its totient is φ = 87551928.

The previous prime is 102220087. The next prime is 102220123. The reversal of 102220111 is 111022201.

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 102220111 - 2⁹ = 102219599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6310 + ... + 15628.

It is an arithmetic number, because the mean of its divisors is an integer number (14613760).

Almost surely, 2^102220111 is an apocalyptic number.

102220111 is a deficient number, since it is larger than the sum of its proper divisors (14689969).

102220111 is an equidigital number, since it uses as much as digits as its factorization.

102220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10893.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 102220111 is about 10110.3961841265. The cubic root of 102220111 is about 467.5687199161.

Adding to 102220111 its reverse (111022201), we get a palindrome (213242312).

It can be divided in two parts, 1022201 and 11, that multiplied together give a palindrome (11244211).

The spelling of 102220111 in words is "one hundred two million, two hundred twenty thousand, one hundred eleven".