4221501284 has 48 divisors (see below), whose sum is σ = 9919061376. Its totient is φ = 1518220800.

The previous prime is 4221501283. The next prime is 4221501287. The reversal of 4221501284 is 4821051224.

It is not an unprimeable number, because it can be changed into a prime (4221501283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 523157 + ... + 531164.

It is an arithmetic number, because the mean of its divisors is an integer number (206647112).

Almost surely, 2^4221501284 is an apocalyptic number.

4221501284 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4221501284 is an abundant number, since it is smaller than the sum of its proper divisors (5697560092).

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

4221501284 is a wasteful number, since it uses less digits than its factorization.

4221501284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054356 (or 1054354 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 4221501284 is about 64973.0812259970. The cubic root of 4221501284 is about 1616.1771981826.

It can be divided in two parts, 4221 and 501284, that added together give a palindrome (505505).

The spelling of 4221501284 in words is "four billion, two hundred twenty-one million, five hundred one thousand, two hundred eighty-four".