20122311 has 32 divisors (see below), whose sum is σ = 31334400. Its totient is φ = 11357280.

The previous prime is 20122241. The next prime is 20122343. The reversal of 20122311 is 11322102.

It is not a de Polignac number, because 20122311 - 2⁹ = 20121799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41770 + ... + 42248.

It is an arithmetic number, because the mean of its divisors is an integer number (979200).

Almost surely, 2^20122311 is an apocalyptic number.

20122311 is a deficient number, since it is larger than the sum of its proper divisors (11212089).

20122311 is a wasteful number, since it uses less digits than its factorization.

20122311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 20122311 is about 4485.7898969970. The cubic root of 20122311 is about 271.9939760416.

Adding to 20122311 its reverse (11322102), we get a palindrome (31444413).

The spelling of 20122311 in words is "twenty million, one hundred twenty-two thousand, three hundred eleven".