122312011 has 4 divisors (see below), whose sum is σ = 123987592. Its totient is φ = 120636432.

The previous prime is 122312009. The next prime is 122312023. The reversal of 122312011 is 110213221.

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 122312011 - 2¹ = 122312009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122311982 and 122312000.

It is not an unprimeable number, because it can be changed into a prime (122319011) 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, 837681 + ... + 837826.

It is an arithmetic number, because the mean of its divisors is an integer number (30996898).

Almost surely, 2^122312011 is an apocalyptic number.

122312011 is a deficient number, since it is larger than the sum of its proper divisors (1675581).

122312011 is an equidigital number, since it uses as much as digits as its factorization.

122312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675580.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 122312011 is about 11059.4760725814. The cubic root of 122312011 is about 496.3900133871.

Adding to 122312011 its reverse (110213221), we get a palindrome (232525232).

The spelling of 122312011 in words is "one hundred twenty-two million, three hundred twelve thousand, eleven".