1123212102320 has 80 divisors (see below), whose sum is σ = 3255856397568. Its totient is φ = 350092081920.

The previous prime is 1123212102319. The next prime is 1123212102437. The reversal of 1123212102320 is 232012123211.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1123212102320² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1123212102292 and 1123212102301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91163654 + ... + 91175973.

Almost surely, 2^{1123212102320} is an apocalyptic number.

1123212102320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123212102320 is an abundant number, since it is smaller than the sum of its proper divisors (2132644295248).

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

1123212102320 is a wasteful number, since it uses less digits than its factorization.

1123212102320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182339658 (or 182339652 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1123212102320 its reverse (232012123211), we get a palindrome (1355224225531).

The spelling of 1123212102320 in words is "one trillion, one hundred twenty-three billion, two hundred twelve million, one hundred two thousand, three hundred twenty".