2231220121101 has 24 divisors (see below), whose sum is σ = 3342308953984. Its totient is φ = 1487449033920.

The previous prime is 2231220121093. The next prime is 2231220121121. The reversal of 2231220121101 is 1011210221322.

2231220121101 is a `hidden beast` number, since 2 + 231 + 220 + 1 + 211 + 0 + 1 = 666.

2231220121101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2231220121101 - 2³ = 2231220121093 is a prime.

It is a super-3 number, since 3×2231220121101³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231220121121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23112405 + ... + 23208741.

Almost surely, 2^{2231220121101} is an apocalyptic number.

It is an amenable number.

2231220121101 is a deficient number, since it is larger than the sum of its proper divisors (1111088832883).

2231220121101 is an frugal number, since it uses more digits than its factorization.

2231220121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191663 (or 191651 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2231220121101 its reverse (1011210221322), we get a palindrome (3242430342423).

The spelling of 2231220121101 in words is "two trillion, two hundred thirty-one billion, two hundred twenty million, one hundred twenty-one thousand, one hundred one".