10111212112222 has 64 divisors (see below), whose sum is σ = 17373346562880. Its totient is φ = 4374777102336.

The previous prime is 10111212112163. The next prime is 10111212112237. The reversal of 10111212112222 is 22221121211101.

It is a happy number.

It is a super-2 number, since 2×10111212112222² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 10111212112222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 357310378 + ... + 357338674.

It is an arithmetic number, because the mean of its divisors is an integer number (271458540045).

Almost surely, 2^{10111212112222} is an apocalyptic number.

10111212112222 is a deficient number, since it is larger than the sum of its proper divisors (7262134450658).

10111212112222 is a wasteful number, since it uses less digits than its factorization.

10111212112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35885.

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

Adding to 10111212112222 its reverse (22221121211101), we get a palindrome (32332333323323).

The spelling of 10111212112222 in words is "ten trillion, one hundred eleven billion, two hundred twelve million, one hundred twelve thousand, two hundred twenty-two".