221462147 has 12 divisors (see below), whose sum is σ = 235339104. Its totient is φ = 208330320.

The previous prime is 221462123. The next prime is 221462149. The reversal of 221462147 is 741264122.

It is not a de Polignac number, because 221462147 - 2¹² = 221458051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221462149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28838 + ... + 35700.

It is an arithmetic number, because the mean of its divisors is an integer number (19611592).

Almost surely, 2^221462147 is an apocalyptic number.

221462147 is a deficient number, since it is larger than the sum of its proper divisors (13876957).

221462147 is an equidigital number, since it uses as much as digits as its factorization.

221462147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6970 (or 6947 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 221462147 is about 14881.6043153956. The cubic root of 221462147 is about 605.0155012762.

The spelling of 221462147 in words is "two hundred twenty-one million, four hundred sixty-two thousand, one hundred forty-seven".