1121452512 has 48 divisors (see below), whose sum is σ = 2945596752. Its totient is φ = 373591040.

The previous prime is 1121452511. The next prime is 1121452517. The reversal of 1121452512 is 2152541211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1121452512² = 2515311473342220288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121452511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249388 + ... + 253844.

It is an arithmetic number, because the mean of its divisors is an integer number (61366599).

Almost surely, 2^1121452512 is an apocalyptic number.

1121452512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121452512 is an abundant number, since it is smaller than the sum of its proper divisors (1824144240).

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

1121452512 is a wasteful number, since it uses less digits than its factorization.

1121452512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7091 (or 7083 counting only the distinct ones).

The product of its digits is 800, while the sum is 24.

The square root of 1121452512 is about 33488.0950786992. The cubic root of 1121452512 is about 1038.9475645309.

Adding to 1121452512 its reverse (2152541211), we get a palindrome (3273993723).

The spelling of 1121452512 in words is "one billion, one hundred twenty-one million, four hundred fifty-two thousand, five hundred twelve".