102201280 has 56 divisors (see below), whose sum is σ = 257696208. Its totient is φ = 38473728.

The previous prime is 102201271. The next prime is 102201287. The reversal of 102201280 is 82102201.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102201287) 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, 3954 + ... + 14833.

It is an arithmetic number, because the mean of its divisors is an integer number (4601718).

Almost surely, 2^102201280 is an apocalyptic number.

102201280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102201280 is an abundant number, since it is smaller than the sum of its proper divisors (155494928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102201280 is a wasteful number, since it uses less digits than its factorization.

102201280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18821 (or 18811 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 102201280 is about 10109.4648720889. The cubic root of 102201280 is about 467.5400062993.

Adding to 102201280 its reverse (82102201), we get a palindrome (184303481).

The spelling of 102201280 in words is "one hundred two million, two hundred one thousand, two hundred eighty".