1121257102 has 48 divisors (see below), whose sum is σ = 2078840160. Its totient is φ = 451386432.

The previous prime is 1121257099. The next prime is 1121257133. The reversal of 1121257102 is 2017521211.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99823 + ... + 110485.

It is an arithmetic number, because the mean of its divisors is an integer number (43309170).

Almost surely, 2^1121257102 is an apocalyptic number.

1121257102 is a deficient number, since it is larger than the sum of its proper divisors (957583058).

1121257102 is a wasteful number, since it uses less digits than its factorization.

1121257102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10745 (or 10738 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 1121257102 is about 33485.1773475967. The cubic root of 1121257102 is about 1038.8872164453.

Adding to 1121257102 its reverse (2017521211), we get a palindrome (3138778313).

The spelling of 1121257102 in words is "one billion, one hundred twenty-one million, two hundred fifty-seven thousand, one hundred two".