221012222222122 has 16 divisors (see below), whose sum is σ = 335402505927720. Its totient is φ = 109216494307008.

The previous prime is 221012222222117. The next prime is 221012222222191. The reversal of 221012222222122 is 221222222210122.

It can be written as a sum of positive squares in 4 ways, for example, as 220965816876561 + 46405345561 = 14864919^2 + 215419^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1276761733 + ... + 1276934824.

Almost surely, 2^{221012222222122} is an apocalyptic number.

221012222222122 is a deficient number, since it is larger than the sum of its proper divisors (114390283705598).

221012222222122 is a wasteful number, since it uses less digits than its factorization.

221012222222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553697065.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 221012222222122 its reverse (221222222210122), we get a palindrome (442234444432244).

The spelling of 221012222222122 in words is "two hundred twenty-one trillion, twelve billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred twenty-two".