221012212211222 has 32 divisors (see below), whose sum is σ = 362449462247424. Its totient is φ = 100621039478400.

The previous prime is 221012212211179. The next prime is 221012212211237. The reversal of 221012212211222 is 222112212210122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27344348 + ... + 34492575.

It is an arithmetic number, because the mean of its divisors is an integer number (11326545695232).

Almost surely, 2^{221012212211222} is an apocalyptic number.

221012212211222 is a deficient number, since it is larger than the sum of its proper divisors (141437250036202).

221012212211222 is a wasteful number, since it uses less digits than its factorization.

221012212211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61840364.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 221012212211222 its reverse (222112212210122), we get a palindrome (443124424421344).

The spelling of 221012212211222 in words is "two hundred twenty-one trillion, twelve billion, two hundred twelve million, two hundred eleven thousand, two hundred twenty-two".