122009311 has 4 divisors (see below), whose sum is σ = 123727824. Its totient is φ = 120290800.

The previous prime is 122009309. The next prime is 122009341. The reversal of 122009311 is 113900221.

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

It is a cyclic number.

It is not a de Polignac number, because 122009311 - 2¹ = 122009309 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 (122009341) 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, 859150 + ... + 859291.

It is an arithmetic number, because the mean of its divisors is an integer number (30931956).

Almost surely, 2^122009311 is an apocalyptic number.

122009311 is a deficient number, since it is larger than the sum of its proper divisors (1718513).

122009311 is an equidigital number, since it uses as much as digits as its factorization.

122009311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718512.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 122009311 is about 11045.7824983113. The cubic root of 122009311 is about 495.9801834239.

Adding to 122009311 its reverse (113900221), we get a palindrome (235909532).

The spelling of 122009311 in words is "one hundred twenty-two million, nine thousand, three hundred eleven".