1021122112 has 28 divisors (see below), whose sum is σ = 2031443740. Its totient is φ = 509262336.

The previous prime is 1021122107. The next prime is 1021122173. The reversal of 1021122112 is 2112211201.

It can be written as a sum of positive squares in 2 ways, for example, as 269485056 + 751637056 = 16416^2 + 27416^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1021122092 and 1021122101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5314 + ... + 45502.

Almost surely, 2^1021122112 is an apocalyptic number.

It is an amenable number.

1021122112 is a deficient number, since it is larger than the sum of its proper divisors (1010321628).

1021122112 is an equidigital number, since it uses as much as digits as its factorization.

1021122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40598 (or 40588 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1021122112 is about 31955.0013612893. The cubic root of 1021122112 is about 1006.9917061181.

Adding to 1021122112 its reverse (2112211201), we get a palindrome (3133333313).

It can be divided in two parts, 10211 and 22112, that added together give a palindrome (32323).

The spelling of 1021122112 in words is "one billion, twenty-one million, one hundred twenty-two thousand, one hundred twelve".