221210110122 has 16 divisors (see below), whose sum is σ = 446335444800. Its totient is φ = 73084165952.

The previous prime is 221210110097. The next prime is 221210110127. The reversal of 221210110122 is 221011012122.

It is not an unprimeable number, because it can be changed into a prime (221210110127) 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, 163133622 + ... + 163134977.

It is an arithmetic number, because the mean of its divisors is an integer number (27895965300).

Almost surely, 2^221210110122 is an apocalyptic number.

221210110122 is an abundant number, since it is smaller than the sum of its proper divisors (225125334678).

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

221210110122 is a wasteful number, since it uses less digits than its factorization.

221210110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326268717.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221210110122 its reverse (221011012122), we get a palindrome (442221122244).

The spelling of 221210110122 in words is "two hundred twenty-one billion, two hundred ten million, one hundred ten thousand, one hundred twenty-two".