10821101 has 2 divisors, whose sum is σ = 10821102. Its totient is φ = 10821100.

The previous prime is 10821091. The next prime is 10821121. The reversal of 10821101 is 10112801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7022500 + 3798601 = 2650^2 + 1949^2 .

It is a cyclic number.

It is not a de Polignac number, because 10821101 - 2⁶ = 10821037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10821121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5410550 + 5410551.

It is an arithmetic number, because the mean of its divisors is an integer number (5410551).

Almost surely, 2^10821101 is an apocalyptic number.

It is an amenable number.

10821101 is a deficient number, since it is larger than the sum of its proper divisors (1).

10821101 is an equidigital number, since it uses as much as digits as its factorization.

10821101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

The square root of 10821101 is about 3289.5441933496. The cubic root of 10821101 is about 221.1857532078.

Adding to 10821101 its reverse (10112801), we get a palindrome (20933902).

The spelling of 10821101 in words is "ten million, eight hundred twenty-one thousand, one hundred one".