221052228748252 has 24 divisors (see below), whose sum is σ = 423122280053760. Its totient is φ = 100213171576560.

The previous prime is 221052228748223. The next prime is 221052228748259. The reversal of 221052228748252 is 252847822250122.

221052228748252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×221052228748252³ (a number of 44 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221052228748252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221052228748259) 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, 6627838588 + ... + 6627871939.

It is an arithmetic number, because the mean of its divisors is an integer number (17630095002240).

Almost surely, 2^{221052228748252} is an apocalyptic number.

221052228748252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221052228748252 is a deficient number, since it is larger than the sum of its proper divisors (202070051305508).

221052228748252 is a wasteful number, since it uses less digits than its factorization.

221052228748252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13255710921 (or 13255710919 counting only the distinct ones).

The product of its (nonzero) digits is 5734400, while the sum is 52.

The spelling of 221052228748252 in words is "two hundred twenty-one trillion, fifty-two billion, two hundred twenty-eight million, seven hundred forty-eight thousand, two hundred fifty-two".