10920121297 has 4 divisors (see below), whose sum is σ = 10926892980. Its totient is φ = 10913349616.

The previous prime is 10920121273. The next prime is 10920121337. The reversal of 10920121297 is 79212102901.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6737783056 + 4182338241 = 82084^2 + 64671^2 .

It is a cyclic number.

It is not a de Polignac number, because 10920121297 - 2⁷ = 10920121169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10920121897) 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, 3383422 + ... + 3386647.

It is an arithmetic number, because the mean of its divisors is an integer number (2731723245).

Almost surely, 2^10920121297 is an apocalyptic number.

It is an amenable number.

10920121297 is a deficient number, since it is larger than the sum of its proper divisors (6771683).

10920121297 is an equidigital number, since it uses as much as digits as its factorization.

10920121297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6771682.

The product of its (nonzero) digits is 4536, while the sum is 34.

The spelling of 10920121297 in words is "ten billion, nine hundred twenty million, one hundred twenty-one thousand, two hundred ninety-seven".