13123211222000 has 80 divisors (see below), whose sum is σ = 34616645223264. Its totient is φ = 4772076800000.

The previous prime is 13123211221969. The next prime is 13123211222053. The reversal of 13123211222000 is 22211232131.

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

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

It is a congruent number.

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, 298232801 + ... + 298276800.

Almost surely, 2^{13123211222000} is an apocalyptic number.

13123211222000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13123211222000 is an abundant number, since it is smaller than the sum of its proper divisors (21493434001264).

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

13123211222000 is a wasteful number, since it uses less digits than its factorization.

13123211222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596509635 (or 596509619 counting only the distinct ones).

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

Adding to 13123211222000 its reverse (22211232131), we get a palindrome (13145422454131).

The spelling of 13123211222000 in words is "thirteen trillion, one hundred twenty-three billion, two hundred eleven million, two hundred twenty-two thousand".