122013709 has 8 divisors (see below), whose sum is σ = 129404088. Its totient is φ = 114647040.

The previous prime is 122013691. The next prime is 122013761. The reversal of 122013709 is 907310221.

It can be written as a sum of positive squares in 4 ways, for example, as 42536484 + 79477225 = 6522^2 + 8915^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122013709 - 2¹⁹ = 121489421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122013769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5299 + ... + 16495.

It is an arithmetic number, because the mean of its divisors is an integer number (16175511).

Almost surely, 2^122013709 is an apocalyptic number.

It is an amenable number.

122013709 is a deficient number, since it is larger than the sum of its proper divisors (7390379).

122013709 is a wasteful number, since it uses less digits than its factorization.

122013709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11855.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 122013709 is about 11045.9815770261. The cubic root of 122013709 is about 495.9861427905.

The spelling of 122013709 in words is "one hundred twenty-two million, thirteen thousand, seven hundred nine".