221110220121010 has 64 divisors (see below), whose sum is σ = 459723567703680. Its totient is φ = 75673510712320.

The previous prime is 221110220121001. The next prime is 221110220121013. The reversal of 221110220121010 is 10121022011122.

It is a super-2 number, since 2×221110220121010² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221110220121013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 298866072 + ... + 299604988.

It is an arithmetic number, because the mean of its divisors is an integer number (7183180745370).

Almost surely, 2^{221110220121010} is an apocalyptic number.

221110220121010 is an abundant number, since it is smaller than the sum of its proper divisors (238613347582670).

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

221110220121010 is a wasteful number, since it uses less digits than its factorization.

221110220121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898971.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221110220121010 its reverse (10121022011122), we get a palindrome (231231242132132).

The spelling of 221110220121010 in words is "two hundred twenty-one trillion, one hundred ten billion, two hundred twenty million, one hundred twenty-one thousand, ten".