4221021156 has 48 divisors (see below), whose sum is σ = 10865171520. Its totient is φ = 1264721920.

The previous prime is 4221021143. The next prime is 4221021229. The reversal of 4221021156 is 6511201224.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167901 + ... + 191396.

It is an arithmetic number, because the mean of its divisors is an integer number (226357740).

Almost surely, 2^4221021156 is an apocalyptic number.

It is an amenable number.

4221021156 is an abundant number, since it is smaller than the sum of its proper divisors (6644150364).

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

4221021156 is a wasteful number, since it uses less digits than its factorization.

4221021156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359404 (or 359402 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 4221021156 is about 64969.3862984714. The cubic root of 4221021156 is about 1616.1159244560.

The spelling of 4221021156 in words is "four billion, two hundred twenty-one million, twenty-one thousand, one hundred fifty-six".