221211200890 has 16 divisors (see below), whose sum is σ = 411024683520. Its totient is φ = 85630142160.

The previous prime is 221211200849. The next prime is 221211200891. The reversal of 221211200890 is 98002112122.

221211200890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221211200891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356791950 + ... + 356792569.

It is an arithmetic number, because the mean of its divisors is an integer number (25689042720).

Almost surely, 2^221211200890 is an apocalyptic number.

221211200890 is a deficient number, since it is larger than the sum of its proper divisors (189813482630).

221211200890 is a wasteful number, since it uses less digits than its factorization.

221211200890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713584557.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 221211200890 in words is "two hundred twenty-one billion, two hundred eleven million, two hundred thousand, eight hundred ninety".