102221471 has 16 divisors (see below), whose sum is σ = 114213888. Its totient is φ = 90698400.

The previous prime is 102221467. The next prime is 102221473. The reversal of 102221471 is 174122201.

It is a cyclic number.

It is not a de Polignac number, because 102221471 - 2² = 102221467 is a prime.

It is a super-3 number, since 3×102221471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157670 + ... + 158316.

It is an arithmetic number, because the mean of its divisors is an integer number (7138368).

Almost surely, 2^102221471 is an apocalyptic number.

102221471 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102221471 is a deficient number, since it is larger than the sum of its proper divisors (11992417).

102221471 is a wasteful number, since it uses less digits than its factorization.

102221471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 102221471 is about 10110.4634414056. The cubic root of 102221471 is about 467.5707935153.

Adding to 102221471 its reverse (174122201), we get a palindrome (276343672).

The spelling of 102221471 in words is "one hundred two million, two hundred twenty-one thousand, four hundred seventy-one".