10621099 has 4 divisors (see below), whose sum is σ = 10641064. Its totient is φ = 10601136.

The previous prime is 10621097. The next prime is 10621123. The reversal of 10621099 is 99012601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99012601 = 73 ⋅1356337.

It is a cyclic number.

It is not a de Polignac number, because 10621099 - 2¹ = 10621097 is a prime.

It is a super-2 number, since 2×10621099² = 225615487935602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10621097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9162 + ... + 10255.

It is an arithmetic number, because the mean of its divisors is an integer number (2660266).

Almost surely, 2^10621099 is an apocalyptic number.

10621099 is a deficient number, since it is larger than the sum of its proper divisors (19965).

10621099 is an equidigital number, since it uses as much as digits as its factorization.

10621099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19964.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 10621099 is about 3259.0027615821. The cubic root of 10621099 is about 219.8145751654.

The spelling of 10621099 in words is "ten million, six hundred twenty-one thousand, ninety-nine".