10101222111222 has 192 divisors, whose sum is σ = 24934483162368. Its totient is φ = 2928060576000.

The previous prime is 10101222111179. The next prime is 10101222111263. The reversal of 10101222111222 is 22211122210101.

10101222111222 is a `hidden beast` number, since 10 + 101 + 222 + 111 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 10101222111195 and 10101222111204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1345569993 + ... + 1345577499.

It is an arithmetic number, because the mean of its divisors is an integer number (129867099804).

Almost surely, 2^{10101222111222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10101222111222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12467241581184).

10101222111222 is an abundant number, since it is smaller than the sum of its proper divisors (14833261051146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10101222111222 is a wasteful number, since it uses less digits than its factorization.

10101222111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10635 (or 10632 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10101222111222 its reverse (22211122210101), we get a palindrome (32312344321323).

It can be divided in two parts, 10101 and 222111222, that multiplied together give a palindrome (2243545453422).

The spelling of 10101222111222 in words is "ten trillion, one hundred one billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twenty-two".