112021121225 has 24 divisors (see below), whose sum is σ = 149608596312. Its totient is φ = 82713715200.

The previous prime is 112021121197. The next prime is 112021121231. The reversal of 112021121225 is 522121120211.

It can be written as a sum of positive squares in 12 ways, for example, as 49005562384 + 63015558841 = 221372^2 + 251029^2 .

It is not a de Polignac number, because 112021121225 - 2⁶ = 112021121161 is a prime.

It is a super-2 number, since 2×112021121225² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112021121197 and 112021121206.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4098605 + ... + 4125845.

It is an arithmetic number, because the mean of its divisors is an integer number (6233691513).

Almost surely, 2^112021121225 is an apocalyptic number.

It is an amenable number.

112021121225 is a deficient number, since it is larger than the sum of its proper divisors (37587475087).

112021121225 is a wasteful number, since it uses less digits than its factorization.

112021121225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39917 (or 39912 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

Adding to 112021121225 its reverse (522121120211), we get a palindrome (634142241436).

The spelling of 112021121225 in words is "one hundred twelve billion, twenty-one million, one hundred twenty-one thousand, two hundred twenty-five".