222201540 has 72 divisors (see below), whose sum is σ = 735291648. Its totient is φ = 53866560.

The previous prime is 222201527. The next prime is 222201557. The reversal of 222201540 is 45102222.

222201540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54132 + ... + 58091.

It is an arithmetic number, because the mean of its divisors is an integer number (10212384).

Almost surely, 2^222201540 is an apocalyptic number.

222201540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222201540 is an abundant number, since it is smaller than the sum of its proper divisors (513090108).

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

222201540 is a wasteful number, since it uses less digits than its factorization.

222201540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112249 (or 112244 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 222201540 is about 14906.4261310349. The cubic root of 222201540 is about 605.6880726484.

Adding to 222201540 its reverse (45102222), we get a palindrome (267303762).

The spelling of 222201540 in words is "two hundred twenty-two million, two hundred one thousand, five hundred forty".