221447445190 has 16 divisors (see below), whose sum is σ = 407086368192. Its totient is φ = 86694318784.

The previous prime is 221447445173. The next prime is 221447445209. The reversal of 221447445190 is 91544744122.

It is a super-2 number, since 2×221447445190² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 235581919 + ... + 235582858.

It is an arithmetic number, because the mean of its divisors is an integer number (25442898012).

Almost surely, 2^221447445190 is an apocalyptic number.

221447445190 is a deficient number, since it is larger than the sum of its proper divisors (185638923002).

221447445190 is a wasteful number, since it uses less digits than its factorization.

221447445190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471164831.

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 221447445190 in words is "two hundred twenty-one billion, four hundred forty-seven million, four hundred forty-five thousand, one hundred ninety".