102700221 has 16 divisors (see below), whose sum is σ = 153879936. Its totient is φ = 60451776.

The previous prime is 102700189. The next prime is 102700229. The reversal of 102700221 is 122007201.

It is not a de Polignac number, because 102700221 - 2⁵ = 102700189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102700221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102700229) 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, 56350 + ... + 58143.

It is an arithmetic number, because the mean of its divisors is an integer number (9617496).

Almost surely, 2^102700221 is an apocalyptic number.

It is an amenable number.

102700221 is a deficient number, since it is larger than the sum of its proper divisors (51179715).

102700221 is a wasteful number, since it uses less digits than its factorization.

102700221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114532.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 102700221 is about 10134.1117519001. Note that the first 3 decimals coincide. The cubic root of 102700221 is about 468.2996063514.

Adding to 102700221 its reverse (122007201), we get a palindrome (224707422).

The spelling of 102700221 in words is "one hundred two million, seven hundred thousand, two hundred twenty-one".