102201915 has 16 divisors (see below), whose sum is σ = 163987200. Its totient is φ = 54352992.

The previous prime is 102201907. The next prime is 102201917. The reversal of 102201915 is 519102201.

It is not a de Polignac number, because 102201915 - 2³ = 102201907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102201891 and 102201900.

It is not an unprimeable number, because it can be changed into a prime (102201917) 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, 4105 + ... + 14874.

It is an arithmetic number, because the mean of its divisors is an integer number (10249200).

Almost surely, 2^102201915 is an apocalyptic number.

102201915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102201915 is a deficient number, since it is larger than the sum of its proper divisors (61785285).

102201915 is a wasteful number, since it uses less digits than its factorization.

102201915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19346.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 102201915 is about 10109.4962782524. The cubic root of 102201915 is about 467.5409746084.

The spelling of 102201915 in words is "one hundred two million, two hundred one thousand, nine hundred fifteen".