102219219 has 32 divisors (see below), whose sum is σ = 156288000. Its totient is φ = 65994912.

The previous prime is 102219217. The next prime is 102219223. The reversal of 102219219 is 912912201.

It is not a de Polignac number, because 102219219 - 2¹ = 102219217 is a prime.

It is a super-2 number, since 2×102219219² = 20897537465939922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 102219192 and 102219201.

It is not an unprimeable number, because it can be changed into a prime (102219217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137952 + ... + 138690.

It is an arithmetic number, because the mean of its divisors is an integer number (4884000).

Almost surely, 2^102219219 is an apocalyptic number.

102219219 is a deficient number, since it is larger than the sum of its proper divisors (54068781).

102219219 is a wasteful number, since it uses less digits than its factorization.

102219219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904 (or 898 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 102219219 is about 10110.3520710211. The cubic root of 102219219 is about 467.5673598689.

The spelling of 102219219 in words is "one hundred two million, two hundred nineteen thousand, two hundred nineteen".