122311210203121 has 4 divisors (see below), whose sum is σ = 122311251249012. Its totient is φ = 122311169157232.

The previous prime is 122311210203103. The next prime is 122311210203223. The reversal of 122311210203121 is 121302012113221.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37859888935521 + 84451321267600 = 6153039^2 + 9189740^2 .

It is a cyclic number.

It is not a de Polignac number, because 122311210203121 - 2¹⁵ = 122311210170353 is a prime.

It is a super-2 number, since 2×122311210203121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122311210203092 and 122311210203101.

It is not an unprimeable number, because it can be changed into a prime (122311210213121) 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, 15670750 + ... + 22140343.

It is an arithmetic number, because the mean of its divisors is an integer number (30577812812253).

Almost surely, 2^{122311210203121} is an apocalyptic number.

It is an amenable number.

122311210203121 is a deficient number, since it is larger than the sum of its proper divisors (41045891).

122311210203121 is an equidigital number, since it uses as much as digits as its factorization.

122311210203121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41045890.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 122311210203121 its reverse (121302012113221), we get a palindrome (243613222316342).

The spelling of 122311210203121 in words is "one hundred twenty-two trillion, three hundred eleven billion, two hundred ten million, two hundred three thousand, one hundred twenty-one".