421155211200000 has 240 divisors, whose sum is σ = 1402390013325840. Its totient is φ = 112308055040000.

The previous prime is 421155211199999. The next prime is 421155211200037. The reversal of 421155211200000 is 2112551124.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39070335 + ... + 48670334.

It is an arithmetic number, because the mean of its divisors is an integer number (5843291722191).

Almost surely, 2^{421155211200000} is an apocalyptic number.

421155211200000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421155211200000 is an abundant number, since it is smaller than the sum of its proper divisors (981234802125840).

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

421155211200000 is an frugal number, since it uses more digits than its factorization.

421155211200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87740715 (or 87740679 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

Adding to 421155211200000 its reverse (2112551124), we get a palindrome (421157323751124).

The spelling of 421155211200000 in words is "four hundred twenty-one trillion, one hundred fifty-five billion, two hundred eleven million, two hundred thousand".