123221122002 has 96 divisors (see below), whose sum is σ = 296244449280. Its totient is φ = 36703611360.

The previous prime is 123221121983. The next prime is 123221122067. The reversal of 123221122002 is 200221122321.

123221122002 is a `hidden beast` number, since 1 + 232 + 211 + 220 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3533383 + ... + 3568085.

It is an arithmetic number, because the mean of its divisors is an integer number (3085879680).

Almost surely, 2^123221122002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123221122002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148122224640).

123221122002 is an abundant number, since it is smaller than the sum of its proper divisors (173023327278).

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

123221122002 is a wasteful number, since it uses less digits than its factorization.

123221122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35028 (or 35025 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 123221122002 its reverse (200221122321), we get a palindrome (323442244323).

The spelling of 123221122002 in words is "one hundred twenty-three billion, two hundred twenty-one million, one hundred twenty-two thousand, two".