1123421012 has 24 divisors (see below), whose sum is σ = 2272092480. Its totient is φ = 476055360.

The previous prime is 1123421003. The next prime is 1123421021. The reversal of 1123421012 is 2101243211.

It is an interprime number because it is at equal distance from previous prime (1123421003) and next prime (1123421021).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222914 + ... + 227897.

It is an arithmetic number, because the mean of its divisors is an integer number (94670520).

Almost surely, 2^1123421012 is an apocalyptic number.

It is an amenable number.

1123421012 is an abundant number, since it is smaller than the sum of its proper divisors (1148671468).

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

1123421012 is a wasteful number, since it uses less digits than its factorization.

1123421012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450911 (or 450909 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1123421012 is about 33517.4732341207. The cubic root of 1123421012 is about 1039.5551018654. Note that the first 3 decimals are identical.

Adding to 1123421012 its reverse (2101243211), we get a palindrome (3224664223).

The spelling of 1123421012 in words is "one billion, one hundred twenty-three million, four hundred twenty-one thousand, twelve".