10990099121 has 2 divisors, whose sum is σ = 10990099122. Its totient is φ = 10990099120.

The previous prime is 10990099093. The next prime is 10990099129. The reversal of 10990099121 is 12199009901.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6669008896 + 4321090225 = 81664^2 + 65735^2 .

It is a cyclic number.

It is not a de Polignac number, because 10990099121 - 2¹⁴ = 10990082737 is a prime.

It is not a weakly prime, because it can be changed into another prime (10990099129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5495049560 + 5495049561.

It is an arithmetic number, because the mean of its divisors is an integer number (5495049561).

Almost surely, 2^10990099121 is an apocalyptic number.

It is an amenable number.

10990099121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10990099121 is an equidigital number, since it uses as much as digits as its factorization.

10990099121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 41.

The spelling of 10990099121 in words is "ten billion, nine hundred ninety million, ninety-nine thousand, one hundred twenty-one".