221110001010 has 48 divisors (see below), whose sum is σ = 579412694016. Its totient is φ = 58498390944.

The previous prime is 221110001009. The next prime is 221110001041. The reversal of 221110001010 is 10100011122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 221110000983 and 221110001001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9660924 + ... + 9683783.

It is an arithmetic number, because the mean of its divisors is an integer number (12071097792).

Almost surely, 2^221110001010 is an apocalyptic number.

221110001010 is an abundant number, since it is smaller than the sum of its proper divisors (358302693006).

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

221110001010 is a wasteful number, since it uses less digits than its factorization.

221110001010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19344847 (or 19344844 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 221110001010 its reverse (10100011122), we get a palindrome (231210012132).

The spelling of 221110001010 in words is "two hundred twenty-one billion, one hundred ten million, one thousand, ten".