1123212113012 has 24 divisors (see below), whose sum is σ = 2157154251840. Its totient is φ = 507493765760.

The previous prime is 1123212113011. The next prime is 1123212113047. The reversal of 1123212113012 is 2103112123211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123212113011) 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, 76422437 + ... + 76437132.

It is an arithmetic number, because the mean of its divisors is an integer number (89881427160).

Almost surely, 2^{1123212113012} is an apocalyptic number.

It is an amenable number.

1123212113012 is a deficient number, since it is larger than the sum of its proper divisors (1033942138828).

1123212113012 is a wasteful number, since it uses less digits than its factorization.

1123212113012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152859751 (or 152859749 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1123212113012 its reverse (2103112123211), we get a palindrome (3226324236223).

The spelling of 1123212113012 in words is "one trillion, one hundred twenty-three billion, two hundred twelve million, one hundred thirteen thousand, twelve".