221201120022009 has 16 divisors (see below), whose sum is σ = 297550977835200. Its totient is φ = 146159391361536.

The previous prime is 221201120021929. The next prime is 221201120022059. The reversal of 221201120022009 is 900220021102122.

It is a de Polignac number, because none of the positive numbers 2^k-221201120022009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221201120022009.

It is not an unprimeable number, because it can be changed into a prime (221201120022059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9899982 + ... + 23246760.

It is an arithmetic number, because the mean of its divisors is an integer number (18596936114700).

Almost surely, 2^{221201120022009} is an apocalyptic number.

It is an amenable number.

221201120022009 is a deficient number, since it is larger than the sum of its proper divisors (76349857813191).

221201120022009 is a wasteful number, since it uses less digits than its factorization.

221201120022009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13395784.

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 221201120022009 in words is "two hundred twenty-one trillion, two hundred one billion, one hundred twenty million, twenty-two thousand, nine".