102203112 has 64 divisors (see below), whose sum is σ = 281568960. Its totient is φ = 30656000.

The previous prime is 102203111. The next prime is 102203149. The reversal of 102203112 is 211302201.

It is a super-2 number, since 2×102203112² = 20890952204969088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (102203111) 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, 24748 + ... + 28580.

It is an arithmetic number, because the mean of its divisors is an integer number (4399515).

Almost surely, 2^102203112 is an apocalyptic number.

102203112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102203112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140784480).

102203112 is an abundant number, since it is smaller than the sum of its proper divisors (179365848).

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

102203112 is a wasteful number, since it uses less digits than its factorization.

102203112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3954 (or 3950 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 102203112 is about 10109.5554798418. Note that the first 3 decimals coincide. The cubic root of 102203112 is about 467.5427998982.

Adding to 102203112 its reverse (211302201), we get a palindrome (313505313).

The spelling of 102203112 in words is "one hundred two million, two hundred three thousand, one hundred twelve".