1102921 has 2 divisors, whose sum is σ = 1102922. Its totient is φ = 1102920.

The previous prime is 1102903. The next prime is 1102939. The reversal of 1102921 is 1292011.

It is a balanced prime because it is at equal distance from previous prime (1102903) and next prime (1102939).

It can be written as a sum of positive squares in only one way, i.e., 990025 + 112896 = 995^2 + 336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1102921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1102895 and 1102904.

It is not a weakly prime, because it can be changed into another prime (1102901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551460 + 551461.

It is an arithmetic number, because the mean of its divisors is an integer number (551461).

2^1102921 is an apocalyptic number.

It is an amenable number.

1102921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1102921 is an equidigital number, since it uses as much as digits as its factorization.

1102921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1102921 is about 1050.2004570557. The cubic root of 1102921 is about 103.3193032171.

Adding to 1102921 its reverse (1292011), we get a palindrome (2394932).

The spelling of 1102921 in words is "one million, one hundred two thousand, nine hundred twenty-one".