221141356 has 12 divisors (see below), whose sum is σ = 400342320. Its totient is φ = 106757840.

The previous prime is 221141351. The next prime is 221141363. The reversal of 221141356 is 653141122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 221141356.

It is not an unprimeable number, because it can be changed into a prime (221141351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 953080 + ... + 953311.

It is an arithmetic number, because the mean of its divisors is an integer number (33361860).

Almost surely, 2^221141356 is an apocalyptic number.

It is an amenable number.

221141356 is a deficient number, since it is larger than the sum of its proper divisors (179200964).

221141356 is a wasteful number, since it uses less digits than its factorization.

221141356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906424 (or 1906422 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 221141356 is about 14870.8223040960. The cubic root of 221141356 is about 604.7232356578.

Adding to 221141356 its reverse (653141122), we get a palindrome (874282478).

The spelling of 221141356 in words is "two hundred twenty-one million, one hundred forty-one thousand, three hundred fifty-six".