1121022156 has 12 divisors (see below), whose sum is σ = 2615718392. Its totient is φ = 373674048.

The previous prime is 1121022131. The next prime is 1121022167. The reversal of 1121022156 is 6512201211.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 46709245 + ... + 46709268.

Almost surely, 2^1121022156 is an apocalyptic number.

It is an amenable number.

1121022156 is an abundant number, since it is smaller than the sum of its proper divisors (1494696236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121022156 is a wasteful number, since it uses less digits than its factorization.

1121022156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93418520 (or 93418518 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 1121022156 is about 33481.6689548176. The cubic root of 1121022156 is about 1038.8146492510.

Adding to 1121022156 its reverse (6512201211), we get a palindrome (7633223367).

The spelling of 1121022156 in words is "one billion, one hundred twenty-one million, twenty-two thousand, one hundred fifty-six".