102213155 has 8 divisors (see below), whose sum is σ = 133806384. Its totient is φ = 74336800.

The previous prime is 102213151. The next prime is 102213187. The reversal of 102213155 is 551312201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102213155 - 2² = 102213151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102213151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929156 + ... + 929265.

It is an arithmetic number, because the mean of its divisors is an integer number (16725798).

Almost surely, 2^102213155 is an apocalyptic number.

102213155 is a deficient number, since it is larger than the sum of its proper divisors (31593229).

102213155 is a wasteful number, since it uses less digits than its factorization.

102213155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858437.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 102213155 is about 10110.0521759287. The cubic root of 102213155 is about 467.5581137781.

Adding to 102213155 its reverse (551312201), we get a palindrome (653525356).

The spelling of 102213155 in words is "one hundred two million, two hundred thirteen thousand, one hundred fifty-five".