4243221200428 has 24 divisors (see below), whose sum is σ = 8985644896032. Its totient is φ = 1711551408384.

The previous prime is 4243221200399. The next prime is 4243221200429. The reversal of 4243221200428 is 8240021223424.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 4243221200393 and 4243221200402.

It is not an unprimeable number, because it can be changed into a prime (4243221200429) 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, 4457164651 + ... + 4457165602.

It is an arithmetic number, because the mean of its divisors is an integer number (374401870668).

Almost surely, 2^{4243221200428} is an apocalyptic number.

It is an amenable number.

4243221200428 is an abundant number, since it is smaller than the sum of its proper divisors (4742423695604).

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

4243221200428 is a wasteful number, since it uses less digits than its factorization.

4243221200428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8914330281 (or 8914330279 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 34.

The spelling of 4243221200428 in words is "four trillion, two hundred forty-three billion, two hundred twenty-one million, two hundred thousand, four hundred twenty-eight".