2121122263241 has 4 divisors (see below), whose sum is σ = 2121791601300. Its totient is φ = 2120452925184.

The previous prime is 2121122263237. The next prime is 2121122263279. The reversal of 2121122263241 is 1423622211212.

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 1750236391225 + 370885872016 = 1322965^2 + 609004^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121122263241 - 2² = 2121122263237 is a prime.

It is a super-4 number, since 4×2121122263241⁴ (a number of 50 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121122262241) 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, 334664276 + ... + 334670613.

It is an arithmetic number, because the mean of its divisors is an integer number (530447900325).

Almost surely, 2^{2121122263241} is an apocalyptic number.

It is an amenable number.

2121122263241 is a deficient number, since it is larger than the sum of its proper divisors (669338059).

2121122263241 is an equidigital number, since it uses as much as digits as its factorization.

2121122263241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669338058.

The product of its digits is 4608, while the sum is 29.

Adding to 2121122263241 its reverse (1423622211212), we get a palindrome (3544744474453).

The spelling of 2121122263241 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred sixty-three thousand, two hundred forty-one".