221463444012 has 24 divisors (see below), whose sum is σ = 516774843312. Its totient is φ = 73817318400.

The previous prime is 221463443989. The next prime is 221463444017. The reversal of 221463444012 is 210444364122.

It is a super-2 number, since 2×221463444012² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221463444017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232689 + ... + 705032.

It is an arithmetic number, because the mean of its divisors is an integer number (21532285138).

Almost surely, 2^221463444012 is an apocalyptic number.

It is an amenable number.

221463444012 is an abundant number, since it is smaller than the sum of its proper divisors (295311399300).

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

221463444012 is a wasteful number, since it uses less digits than its factorization.

221463444012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957409 (or 957407 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

The spelling of 221463444012 in words is "two hundred twenty-one billion, four hundred sixty-three million, four hundred forty-four thousand, twelve".