221234120010 has 48 divisors (see below), whose sum is σ = 575355515904. Its totient is φ = 58980708576.

The previous prime is 221234119993. The next prime is 221234120047. The reversal of 221234120010 is 10021432122.

It is a happy number.

221234120010 is a `hidden beast` number, since 221 + 23 + 412 + 0 + 0 + 10 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

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, 43159 + ... + 666581.

It is an arithmetic number, because the mean of its divisors is an integer number (11986573248).

Almost surely, 2^221234120010 is an apocalyptic number.

221234120010 is an abundant number, since it is smaller than the sum of its proper divisors (354121395894).

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

221234120010 is a wasteful number, since it uses less digits than its factorization.

221234120010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627379 (or 627376 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 221234120010 its reverse (10021432122), we get a palindrome (231255552132).

The spelling of 221234120010 in words is "two hundred twenty-one billion, two hundred thirty-four million, one hundred twenty thousand, ten".