10211221111222 has 16 divisors (see below), whose sum is σ = 16492700103120. Its totient is φ = 4723835089408.

The previous prime is 10211221111193. The next prime is 10211221111249. The reversal of 10211221111222 is 22211112211201.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 10211221111222.

It is a congruent number.

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, 2545167763 + ... + 2545171774.

It is an arithmetic number, because the mean of its divisors is an integer number (1030793756445).

Almost surely, 2^{10211221111222} is an apocalyptic number.

10211221111222 is a deficient number, since it is larger than the sum of its proper divisors (6281478991898).

10211221111222 is a wasteful number, since it uses less digits than its factorization.

10211221111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5090339615.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 10211221111222 its reverse (22211112211201), we get a palindrome (32422333322423).

The spelling of 10211221111222 in words is "ten trillion, two hundred eleven billion, two hundred twenty-one million, one hundred eleven thousand, two hundred twenty-two".