201222221148 has 144 divisors (see below), whose sum is σ = 580972313376. Its totient is φ = 58174156800.

The previous prime is 201222221147. The next prime is 201222221171. The reversal of 201222221148 is 841122222102.

201222221148 is a `hidden beast` number, since 201 + 222 + 221 + 14 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201222221147) 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 47 ways as a sum of consecutive naturals, for example, 4760515 + ... + 4802597.

It is an arithmetic number, because the mean of its divisors is an integer number (4034529954).

Almost surely, 2^201222221148 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201222221148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290486156688).

201222221148 is an abundant number, since it is smaller than the sum of its proper divisors (379750092228).

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

201222221148 is a wasteful number, since it uses less digits than its factorization.

201222221148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42724 (or 42719 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The spelling of 201222221148 in words is "two hundred one billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred forty-eight".