2201010112121 has 4 divisors (see below), whose sum is σ = 2202818667252. Its totient is φ = 2199201556992.

The previous prime is 2201010112099. The next prime is 2201010112141. The reversal of 2201010112121 is 1212110101022.

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 703350595600 + 1497659516521 = 838660^2 + 1223789^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201010112121 - 2³⁰ = 2199936370297 is a prime.

It is a super-2 number, since 2×2201010112121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2201010112096 and 2201010112105.

It is not an unprimeable number, because it can be changed into a prime (2201010112141) 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, 904275740 + ... + 904278173.

It is an arithmetic number, because the mean of its divisors is an integer number (550704666813).

Almost surely, 2^{2201010112121} is an apocalyptic number.

It is an amenable number.

2201010112121 is a deficient number, since it is larger than the sum of its proper divisors (1808555131).

2201010112121 is a wasteful number, since it uses less digits than its factorization.

2201010112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808555130.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2201010112121 its reverse (1212110101022), we get a palindrome (3413120213143).

The spelling of 2201010112121 in words is "two trillion, two hundred one billion, ten million, one hundred twelve thousand, one hundred twenty-one".