122553400512000 has 320 divisors, whose sum is σ = 421509762273600. Its totient is φ = 31553977548800.

The previous prime is 122553400511989. The next prime is 122553400512079. The reversal of 122553400512000 is 215004355221.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5437155 + ... + 16573154.

It is an arithmetic number, because the mean of its divisors is an integer number (1317218007105).

Almost surely, 2^{122553400512000} is an apocalyptic number.

122553400512000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122553400512000 is an abundant number, since it is smaller than the sum of its proper divisors (298956361761600).

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

122553400512000 is an equidigital number, since it uses as much as digits as its factorization.

122553400512000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22010374 (or 22010348 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 122553400512000 its reverse (215004355221), we get a palindrome (122768404867221).

The spelling of 122553400512000 in words is "one hundred twenty-two trillion, five hundred fifty-three billion, four hundred million, five hundred twelve thousand".