2112201225 has 48 divisors (see below), whose sum is σ = 4014028800. Its totient is φ = 1087652160.

The previous prime is 2112201211. The next prime is 2112201229. The reversal of 2112201225 is 5221022112.

It is not a de Polignac number, because 2112201225 - 2⁷ = 2112201097 is a prime.

It is a super-2 number, since 2×2112201225² = 8922788029783001250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2112201198 and 2112201207.

It is not an unprimeable number, because it can be changed into a prime (2112201229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34377 + ... + 73526.

It is an arithmetic number, because the mean of its divisors is an integer number (83625600).

Almost surely, 2^2112201225 is an apocalyptic number.

2112201225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2112201225 is a deficient number, since it is larger than the sum of its proper divisors (1901827575).

2112201225 is a wasteful number, since it uses less digits than its factorization.

2112201225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107951 (or 107940 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 2112201225 is about 45958.6904186793. The cubic root of 2112201225 is about 1283.0544779326.

Adding to 2112201225 its reverse (5221022112), we get a palindrome (7333223337).

The spelling of 2112201225 in words is "two billion, one hundred twelve million, two hundred one thousand, two hundred twenty-five".