122121240000 has 280 divisors, whose sum is σ = 407577633408. Its totient is φ = 32257920000.

The previous prime is 122121239987. The next prime is 122121240019. The reversal of 122121240000 is 42121221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12835245 + ... + 12844755.

Almost surely, 2^122121240000 is an apocalyptic number.

122121240000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122121240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203788816704).

122121240000 is an abundant number, since it is smaller than the sum of its proper divisors (285456393408).

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

122121240000 is an equidigital number, since it uses as much as digits as its factorization.

122121240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9653 (or 9628 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 122121240000 its reverse (42121221), we get a palindrome (122163361221).

The spelling of 122121240000 in words is "one hundred twenty-two billion, one hundred twenty-one million, two hundred forty thousand".