1021112102 has 4 divisors (see below), whose sum is σ = 1531668156. Its totient is φ = 510556050.

The previous prime is 1021112077. The next prime is 1021112111. The reversal of 1021112102 is 2012111201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2012111201 = 4517 ⋅445453.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255278024 + ... + 255278027.

It is an arithmetic number, because the mean of its divisors is an integer number (382917039).

Almost surely, 2^1021112102 is an apocalyptic number.

1021112102 is a deficient number, since it is larger than the sum of its proper divisors (510556054).

1021112102 is an equidigital number, since it uses as much as digits as its factorization.

1021112102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510556053.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1021112102 is about 31954.8447344061. The cubic root of 1021112102 is about 1006.9884156139.

Adding to 1021112102 its reverse (2012111201), we get a palindrome (3033223303).

Subtracting 1021112102 from its reverse (2012111201), we obtain a palindrome (990999099).

The spelling of 1021112102 in words is "one billion, twenty-one million, one hundred twelve thousand, one hundred two".