421220043312 has 40 divisors (see below), whose sum is σ = 1106595036480. Its totient is φ = 138026905920.

The previous prime is 421220043227. The next prime is 421220043317. The reversal of 421220043312 is 213340022124.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (421220043317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74365114 + ... + 74370777.

It is an arithmetic number, because the mean of its divisors is an integer number (27664875912).

Almost surely, 2^421220043312 is an apocalyptic number.

It is an amenable number.

421220043312 is an abundant number, since it is smaller than the sum of its proper divisors (685374993168).

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

421220043312 is a wasteful number, since it uses less digits than its factorization.

421220043312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148735961 (or 148735955 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 421220043312 its reverse (213340022124), we get a palindrome (634560065436).

The spelling of 421220043312 in words is "four hundred twenty-one billion, two hundred twenty million, forty-three thousand, three hundred twelve".