102211243 has 4 divisors (see below), whose sum is σ = 102776128. Its totient is φ = 101646360.

The previous prime is 102211231. The next prime is 102211253. The reversal of 102211243 is 342112201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102211243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102211253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282171 + ... + 282532.

It is an arithmetic number, because the mean of its divisors is an integer number (25694032).

Almost surely, 2^102211243 is an apocalyptic number.

102211243 is a deficient number, since it is larger than the sum of its proper divisors (564885).

102211243 is an equidigital number, since it uses as much as digits as its factorization.

102211243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564884.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 102211243 is about 10109.9576161327. The cubic root of 102211243 is about 467.5551983782. Note that the first 3 decimals are identical.

Adding to 102211243 its reverse (342112201), we get a palindrome (444323444).

The spelling of 102211243 in words is "one hundred two million, two hundred eleven thousand, two hundred forty-three".