1121920852 has 12 divisors (see below), whose sum is σ = 2114389396. Its totient is φ = 517809600.

The previous prime is 1121920837. The next prime is 1121920853. The reversal of 1121920852 is 2580291211.

It can be written as a sum of positive squares in 2 ways, for example, as 69956496 + 1051964356 = 8364^2 + 32434^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121920853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10787649 + ... + 10787752.

Almost surely, 2^1121920852 is an apocalyptic number.

It is an amenable number.

1121920852 is a deficient number, since it is larger than the sum of its proper divisors (992468544).

1121920852 is a wasteful number, since it uses less digits than its factorization.

1121920852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21575418 (or 21575416 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 1121920852 is about 33495.0869830189. The cubic root of 1121920852 is about 1039.0921725215.

The spelling of 1121920852 in words is "one billion, one hundred twenty-one million, nine hundred twenty thousand, eight hundred fifty-two".