421511200421200 has 60 divisors (see below), whose sum is σ = 1012766483476188. Its totient is φ = 168590190976000.

The previous prime is 421511200421197. The next prime is 421511200421251. The reversal of 421511200421200 is 2124002115124.

It can be written as a sum of positive squares in 6 ways, for example, as 880962451216 + 420630237969984 = 938596^2 + 20509272^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39927427 + ... + 49368226.

Almost surely, 2^{421511200421200} is an apocalyptic number.

421511200421200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421511200421200 is an abundant number, since it is smaller than the sum of its proper divisors (591255283054988).

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

421511200421200 is a wasteful number, since it uses less digits than its factorization.

421511200421200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89307472 (or 89307461 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 421511200421200 its reverse (2124002115124), we get a palindrome (423635202536324).

The spelling of 421511200421200 in words is "four hundred twenty-one trillion, five hundred eleven billion, two hundred million, four hundred twenty-one thousand, two hundred".