221060964 has 24 divisors (see below), whose sum is σ = 524553120. Its totient is φ = 72437824.

The previous prime is 221060951. The next prime is 221060993. The reversal of 221060964 is 469060122.

221060964 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155409 + ... + 156824.

It is an arithmetic number, because the mean of its divisors is an integer number (21856380).

Almost surely, 2^221060964 is an apocalyptic number.

It is an amenable number.

221060964 is an abundant number, since it is smaller than the sum of its proper divisors (303492156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221060964 is a wasteful number, since it uses less digits than its factorization.

221060964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312299 (or 312297 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 221060964 is about 14868.1190471424. The cubic root of 221060964 is about 604.6499479902.

The spelling of 221060964 in words is "two hundred twenty-one million, sixty thousand, nine hundred sixty-four".