221012221110110 has 128 divisors (see below), whose sum is σ = 447754552704000. Its totient is φ = 78050730498048.

The previous prime is 221012221110077. The next prime is 221012221110119. The reversal of 221012221110110 is 11011122210122.

221012221110110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221012221110119) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 714912551 + ... + 715221629.

It is an arithmetic number, because the mean of its divisors is an integer number (3498082443000).

Almost surely, 2^{221012221110110} is an apocalyptic number.

221012221110110 is an abundant number, since it is smaller than the sum of its proper divisors (226742331593890).

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

221012221110110 is a wasteful number, since it uses less digits than its factorization.

221012221110110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311298.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221012221110110 its reverse (11011122210122), we get a palindrome (232023343320232).

The spelling of 221012221110110 in words is "two hundred twenty-one trillion, twelve billion, two hundred twenty-one million, one hundred ten thousand, one hundred ten".