102221047 has 8 divisors (see below), whose sum is σ = 106966656. Its totient is φ = 97579872.

The previous prime is 102220997. The next prime is 102221071. The reversal of 102221047 is 740122201.

It is a happy number.

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 102221047 - 2²³ = 93832439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221087) 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, 24103 + ... + 28024.

It is an arithmetic number, because the mean of its divisors is an integer number (13370832).

Almost surely, 2^102221047 is an apocalyptic number.

102221047 is a deficient number, since it is larger than the sum of its proper divisors (4745609).

102221047 is an equidigital number, since it uses as much as digits as its factorization.

102221047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52217.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 102221047 is about 10110.4424730078. The cubic root of 102221047 is about 467.5701470422.

Adding to 102221047 its reverse (740122201), we get a palindrome (842343248).

The spelling of 102221047 in words is "one hundred two million, two hundred twenty-one thousand, forty-seven".