1123421203122 has 32 divisors (see below), whose sum is σ = 2289408613632. Its totient is φ = 367380434304.

The previous prime is 1123421203087. The next prime is 1123421203129. The reversal of 1123421203122 is 2213021243211.

It is a junction number, because it is equal to n+sod(n) for n = 1123421203092 and 1123421203101.

It is not an unprimeable number, because it can be changed into a prime (1123421203129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4315038 + ... + 4567974.

It is an arithmetic number, because the mean of its divisors is an integer number (71544019176).

Almost surely, 2^{1123421203122} is an apocalyptic number.

1123421203122 is an abundant number, since it is smaller than the sum of its proper divisors (1165987410510).

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

1123421203122 is a wasteful number, since it uses less digits than its factorization.

1123421203122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266962.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1123421203122 its reverse (2213021243211), we get a palindrome (3336442446333).

The spelling of 1123421203122 in words is "one trillion, one hundred twenty-three billion, four hundred twenty-one million, two hundred three thousand, one hundred twenty-two".