121013705 has 4 divisors (see below), whose sum is σ = 145216452. Its totient is φ = 96810960.

The previous prime is 121013699. The next prime is 121013707. The reversal of 121013705 is 507310121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 507310121 = 2251 ⋅225371.

It can be written as a sum of positive squares in 2 ways, for example, as 81938704 + 39075001 = 9052^2 + 6251^2 .

It is not a de Polignac number, because 121013705 - 2⁸ = 121013449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121013707) 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, 12101366 + ... + 12101375.

It is an arithmetic number, because the mean of its divisors is an integer number (36304113).

Almost surely, 2^121013705 is an apocalyptic number.

It is an amenable number.

121013705 is a deficient number, since it is larger than the sum of its proper divisors (24202747).

121013705 is an equidigital number, since it uses as much as digits as its factorization.

121013705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24202746.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 121013705 is about 11000.6229369068. The cubic root of 121013705 is about 494.6274174845.

Adding to 121013705 its reverse (507310121), we get a palindrome (628323826).

The spelling of 121013705 in words is "one hundred twenty-one million, thirteen thousand, seven hundred five".