221222010672 has 120 divisors (see below), whose sum is σ = 667213847664. Its totient is φ = 68019789312.

The previous prime is 221222010643. The next prime is 221222010703. The reversal of 221222010672 is 276010222122.

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, 2629938 + ... + 2712750.

Almost surely, 2^221222010672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221222010672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333606923832).

221222010672 is an abundant number, since it is smaller than the sum of its proper divisors (445991836992).

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

221222010672 is a wasteful number, since it uses less digits than its factorization.

221222010672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84267 (or 84258 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

Adding to 221222010672 its reverse (276010222122), we get a palindrome (497232232794).

The spelling of 221222010672 in words is "two hundred twenty-one billion, two hundred twenty-two million, ten thousand, six hundred seventy-two".