221653070 has 16 divisors (see below), whose sum is σ = 416322720. Its totient is φ = 84806304.

The previous prime is 221653067. The next prime is 221653073. The reversal of 221653070 is 70356122.

221653070 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221653067) and next prime (221653073).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221653073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481625 + ... + 482084.

It is an arithmetic number, because the mean of its divisors is an integer number (26020170).

Almost surely, 2^221653070 is an apocalyptic number.

221653070 is a deficient number, since it is larger than the sum of its proper divisors (194669650).

221653070 is a wasteful number, since it uses less digits than its factorization.

221653070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963739.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 221653070 is about 14888.0176652233. The cubic root of 221653070 is about 605.1893130657.

The spelling of 221653070 in words is "two hundred twenty-one million, six hundred fifty-three thousand, seventy".