10921087 has 2 divisors, whose sum is σ = 10921088. Its totient is φ = 10921086.

The previous prime is 10921069. The next prime is 10921103. The reversal of 10921087 is 78012901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10921087 - 2²³ = 2532479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10921787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5460543 + 5460544.

It is an arithmetic number, because the mean of its divisors is an integer number (5460544).

Almost surely, 2^10921087 is an apocalyptic number.

10921087 is a deficient number, since it is larger than the sum of its proper divisors (1).

10921087 is an equidigital number, since it uses as much as digits as its factorization.

10921087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 10921087 is about 3304.7067948609. The cubic root of 10921087 is about 221.8649111858.

Adding to 10921087 its reverse (78012901), we get a palindrome (88933988).

The spelling of 10921087 in words is "ten million, nine hundred twenty-one thousand, eighty-seven".