221470070 has 16 divisors (see below), whose sum is σ = 405403920. Its totient is φ = 87086304.

The previous prime is 221470057. The next prime is 221470079. The reversal of 221470070 is 70074122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221470079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187097 + ... + 188276.

It is an arithmetic number, because the mean of its divisors is an integer number (25337745).

Almost surely, 2^221470070 is an apocalyptic number.

221470070 is a deficient number, since it is larger than the sum of its proper divisors (183933850).

221470070 is a wasteful number, since it uses less digits than its factorization.

221470070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375439.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 221470070 is about 14881.8705141524. The cubic root of 221470070 is about 605.0227161746.

The spelling of 221470070 in words is "two hundred twenty-one million, four hundred seventy thousand, seventy".