1000222101221 has 8 divisors (see below), whose sum is σ = 1154428904064. Its totient is φ = 848844781200.

The previous prime is 1000222101209. The next prime is 1000222101251. The reversal of 1000222101221 is 1221012220001.

1000222101221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1000222101221 - 2¹⁸ = 1000221839077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000222101196 and 1000222101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000222101251) 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, 707369945 + ... + 707371358.

It is an arithmetic number, because the mean of its divisors is an integer number (144303613008).

Almost surely, 2^{1000222101221} is an apocalyptic number.

It is an amenable number.

1000222101221 is a deficient number, since it is larger than the sum of its proper divisors (154206802843).

1000222101221 is a wasteful number, since it uses less digits than its factorization.

1000222101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414741411.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1000222101221 its reverse (1221012220001), we get a palindrome (2221234321222).

The spelling of 1000222101221 in words is "one trillion, two hundred twenty-two million, one hundred one thousand, two hundred twenty-one".