2102247 has 32 divisors (see below), whose sum is σ = 3648000. Its totient is φ = 1195992.

The previous prime is 2102213. The next prime is 2102249. The reversal of 2102247 is 7422012.

It is not a de Polignac number, because 2102247 - 2⁶ = 2102183 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9148 + ... + 9374.

It is an arithmetic number, because the mean of its divisors is an integer number (114000).

2^2102247 is an apocalyptic number.

2102247 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2102247 is a deficient number, since it is larger than the sum of its proper divisors (1545753).

2102247 is an equidigital number, since it uses as much as digits as its factorization.

2102247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 2102247 is about 1449.9127559960. The cubic root of 2102247 is about 128.1035742083.

Adding to 2102247 its reverse (7422012), we get a palindrome (9524259).

The spelling of 2102247 in words is "two million, one hundred two thousand, two hundred forty-seven".