102112215 has 16 divisors (see below), whose sum is σ = 163511136. Its totient is φ = 54416000.

The previous prime is 102112211. The next prime is 102112223. The reversal of 102112215 is 512211201.

It is not a de Polignac number, because 102112215 - 2² = 102112211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 102112194 and 102112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102112211) 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, 26725 + ... + 30305.

It is an arithmetic number, because the mean of its divisors is an integer number (10219446).

Almost surely, 2^102112215 is an apocalyptic number.

102112215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102112215 is a deficient number, since it is larger than the sum of its proper divisors (61398921).

102112215 is a wasteful number, since it uses less digits than its factorization.

102112215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5490.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 102112215 is about 10105.0588815702. The cubic root of 102112215 is about 467.4041516639.

Adding to 102112215 its reverse (512211201), we get a palindrome (614323416).

The spelling of 102112215 in words is "one hundred two million, one hundred twelve thousand, two hundred fifteen".