122011765 has 16 divisors (see below), whose sum is σ = 150527232. Its totient is φ = 94895424.

The previous prime is 122011763. The next prime is 122011781. The reversal of 122011765 is 567110221.

It is a cyclic number.

It is not a de Polignac number, because 122011765 - 2¹ = 122011763 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 (122011763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35242 + ... + 38548.

It is an arithmetic number, because the mean of its divisors is an integer number (9407952).

Almost surely, 2^122011765 is an apocalyptic number.

It is an amenable number.

122011765 is a deficient number, since it is larger than the sum of its proper divisors (28515467).

122011765 is a wasteful number, since it uses less digits than its factorization.

122011765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3516.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 122011765 is about 11045.8935808743. The cubic root of 122011765 is about 495.9835086543.

Adding to 122011765 its reverse (567110221), we get a palindrome (689121986).

The spelling of 122011765 in words is "one hundred twenty-two million, eleven thousand, seven hundred sixty-five".