12121122203311 has 8 divisors (see below), whose sum is σ = 13256349819984. Its totient is φ = 10991445822720.

The previous prime is 12121122203279. The next prime is 12121122203341. The reversal of 12121122203311 is 11330222112121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12121122203311 - 2⁵ = 12121122203279 is a prime.

It is a super-2 number, since 2×12121122203311² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121122203341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1387804450 + ... + 1387813183.

It is an arithmetic number, because the mean of its divisors is an integer number (1657043727498).

Almost surely, 2^{12121122203311} is an apocalyptic number.

12121122203311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12121122203311 is a deficient number, since it is larger than the sum of its proper divisors (1135227616673).

12121122203311 is a wasteful number, since it uses less digits than its factorization.

12121122203311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775618041.

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

Adding to 12121122203311 its reverse (11330222112121), we get a palindrome (23451344315432).

The spelling of 12121122203311 in words is "twelve trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred three thousand, three hundred eleven".