221010102106 has 32 divisors (see below), whose sum is σ = 344443207680. Its totient is φ = 106278744816.

The previous prime is 221010102101. The next prime is 221010102107. The reversal of 221010102106 is 601201010122.

It is a self number, because there is not a number n which added to its sum of digits gives 221010102106.

It is not an unprimeable number, because it can be changed into a prime (221010102101) 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, 17557891 + ... + 17570473.

It is an arithmetic number, because the mean of its divisors is an integer number (10763850240).

Almost surely, 2^221010102106 is an apocalyptic number.

221010102106 is a deficient number, since it is larger than the sum of its proper divisors (123433105574).

221010102106 is a wasteful number, since it uses less digits than its factorization.

221010102106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15858.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 221010102106 its reverse (601201010122), we get a palindrome (822211112228).

The spelling of 221010102106 in words is "two hundred twenty-one billion, ten million, one hundred two thousand, one hundred six".