221133142 has 8 divisors (see below), whose sum is σ = 332253432. Its totient is φ = 110382000.

The previous prime is 221133139. The next prime is 221133151. The reversal of 221133142 is 241331122.

It is a happy number.

221133142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90784 + ... + 93187.

It is an arithmetic number, because the mean of its divisors is an integer number (41531679).

Almost surely, 2^221133142 is an apocalyptic number.

221133142 is a deficient number, since it is larger than the sum of its proper divisors (111120290).

221133142 is a wasteful number, since it uses less digits than its factorization.

221133142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184574.

The product of its digits is 288, while the sum is 19.

The square root of 221133142 is about 14870.5461231254. The cubic root of 221133142 is about 604.7157483531.

Adding to 221133142 its reverse (241331122), we get a palindrome (462464264).

It can be divided in two parts, 2211 and 33142, that added together give a palindrome (35353).

The spelling of 221133142 in words is "two hundred twenty-one million, one hundred thirty-three thousand, one hundred forty-two".