20122311121 has 8 divisors (see below), whose sum is σ = 22229481600. Its totient is φ = 18061452240.

The previous prime is 20122311107. The next prime is 20122311149. The reversal of 20122311121 is 12111322102.

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 20122311121 - 2¹⁵ = 20122278353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20122311095 and 20122311104.

It is not an unprimeable number, because it can be changed into a prime (20122311821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11576986 + ... + 11578723.

It is an arithmetic number, because the mean of its divisors is an integer number (2778685200).

Almost surely, 2^20122311121 is an apocalyptic number.

It is an amenable number.

20122311121 is a deficient number, since it is larger than the sum of its proper divisors (2107170479).

20122311121 is a wasteful number, since it uses less digits than its factorization.

20122311121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23155799.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20122311121 its reverse (12111322102), we get a palindrome (32233633223).

It can be divided in two parts, 201 and 22311121, that added together give a palindrome (22311322).

The spelling of 20122311121 in words is "twenty billion, one hundred twenty-two million, three hundred eleven thousand, one hundred twenty-one".