1123202001012 has 96 divisors (see below), whose sum is σ = 3227717412864. Its totient is φ = 296035171200.

The previous prime is 1123202000993. The next prime is 1123202001017. The reversal of 1123202001012 is 2101002023211.

It is a junction number, because it is equal to n+sod(n) for n = 1123202000982 and 1123202001000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123202001017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1335937 + ... + 2007767.

It is an arithmetic number, because the mean of its divisors is an integer number (33622056384).

Almost surely, 2^{1123202001012} is an apocalyptic number.

1123202001012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123202001012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1613858706432).

1123202001012 is an abundant number, since it is smaller than the sum of its proper divisors (2104515411852).

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

1123202001012 is a wasteful number, since it uses less digits than its factorization.

1123202001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673389 (or 673387 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1123202001012 its reverse (2101002023211), we get a palindrome (3224204024223).

The spelling of 1123202001012 in words is "one trillion, one hundred twenty-three billion, two hundred two million, one thousand, twelve".